diff --git a/lib/datasource/common.ts b/lib/datasource/common.ts
index 435d0c806b515ffac96b57322f1d50410906b77e..ef65c42243d96faa8977886adaaeaaa858c0863e 100644
--- a/lib/datasource/common.ts
+++ b/lib/datasource/common.ts
@@ -19,7 +19,6 @@ export interface Release {
   gitref?: string;
   isDeprecated?: boolean;
 
-  releaseDate?: string;
   releaseTimestamp?: any;
   version: string;
 }
diff --git a/lib/datasource/ruby-version/index.ts b/lib/datasource/ruby-version/index.ts
index 4f0768f74943ba9fe6dd290375491212380ea1c6..2c4339212abcd46a68f6c1f89234bb1e632fd8bb 100644
--- a/lib/datasource/ruby-version/index.ts
+++ b/lib/datasource/ruby-version/index.ts
@@ -37,11 +37,11 @@ export async function getPkgReleases(
       if (columns.length) {
         const version = columns[0].replace('Ruby ', '');
         if (isVersion(version)) {
-          const releaseDate = columns[1];
+          const releaseTimestamp = columns[1];
           const changelogUrl = columns[2]
             .replace('<a href="', 'https://www.ruby-lang.org')
             .replace('">more...</a>', '');
-          res.releases.push({ version, releaseDate, changelogUrl });
+          res.releases.push({ version, releaseTimestamp, changelogUrl });
         }
       }
     }
diff --git a/lib/datasource/rubygems/get.ts b/lib/datasource/rubygems/get.ts
index 0f5364ed77d124a47638972c1a695b052eaa5789..e970248decb06400084e7cc820da921a275dd7b4 100644
--- a/lib/datasource/rubygems/get.ts
+++ b/lib/datasource/rubygems/get.ts
@@ -81,13 +81,13 @@ export const getDependency = async ({
       ({
         number: version,
         platform: rubyPlatform,
-        created_at: releaseDate,
+        created_at: releaseTimestamp,
         rubygems_version: rubygemsVersion,
         ruby_version: rubyVersion,
       }) => ({
         version,
         rubyPlatform,
-        releaseDate,
+        releaseTimestamp,
         rubygemsVersion,
         rubyVersion,
       })
diff --git a/test/datasource/__snapshots__/ruby-version.spec.ts.snap b/test/datasource/__snapshots__/ruby-version.spec.ts.snap
index 43a81e221984feafdf4179e5ffb740c81e4e86c6..0f9a8fc1fba5ea5a5fdd85a993f9b66ec563db88 100644
--- a/test/datasource/__snapshots__/ruby-version.spec.ts.snap
+++ b/test/datasource/__snapshots__/ruby-version.spec.ts.snap
@@ -6,667 +6,667 @@ Object {
   "releases": Array [
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/12/25/ruby-2-6-0-released/",
-      "releaseDate": "2018-12-25",
+      "releaseTimestamp": "2018-12-25",
       "version": "2.6.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/12/15/ruby-2-6-0-rc2-released/",
-      "releaseDate": "2018-12-15",
+      "releaseTimestamp": "2018-12-15",
       "version": "2.6.0-rc2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/12/06/ruby-2-6-0-rc1-released/",
-      "releaseDate": "2018-12-06",
+      "releaseTimestamp": "2018-12-06",
       "version": "2.6.0-rc1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/",
-      "releaseDate": "2018-11-06",
+      "releaseTimestamp": "2018-11-06",
       "version": "2.6.0-preview3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/10/18/ruby-2-5-3-released/",
-      "releaseDate": "2018-10-18",
+      "releaseTimestamp": "2018-10-18",
       "version": "2.5.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/",
-      "releaseDate": "2018-10-17",
+      "releaseTimestamp": "2018-10-17",
       "version": "2.5.2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/",
-      "releaseDate": "2018-10-17",
+      "releaseTimestamp": "2018-10-17",
       "version": "2.4.5",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/",
-      "releaseDate": "2018-10-17",
+      "releaseTimestamp": "2018-10-17",
       "version": "2.3.8",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/05/31/ruby-2-6-0-preview2-released/",
-      "releaseDate": "2018-05-31",
+      "releaseTimestamp": "2018-05-31",
       "version": "2.6.0-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/",
-      "releaseDate": "2018-03-28",
+      "releaseTimestamp": "2018-03-28",
       "version": "2.5.1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/",
-      "releaseDate": "2018-03-28",
+      "releaseTimestamp": "2018-03-28",
       "version": "2.4.4",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/",
-      "releaseDate": "2018-03-28",
+      "releaseTimestamp": "2018-03-28",
       "version": "2.3.7",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/",
-      "releaseDate": "2018-03-28",
+      "releaseTimestamp": "2018-03-28",
       "version": "2.2.10",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2018/02/24/ruby-2-6-0-preview1-released/",
-      "releaseDate": "2018-02-24",
+      "releaseTimestamp": "2018-02-24",
       "version": "2.6.0-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/12/25/ruby-2-5-0-released/",
-      "releaseDate": "2017-12-25",
+      "releaseTimestamp": "2017-12-25",
       "version": "2.5.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-5-0-rc1-released/",
-      "releaseDate": "2017-12-14",
+      "releaseTimestamp": "2017-12-14",
       "version": "2.5.0-rc1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-4-3-released/",
-      "releaseDate": "2017-12-14",
+      "releaseTimestamp": "2017-12-14",
       "version": "2.4.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-3-6-released/",
-      "releaseDate": "2017-12-14",
+      "releaseTimestamp": "2017-12-14",
       "version": "2.3.6",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-2-9-released/",
-      "releaseDate": "2017-12-14",
+      "releaseTimestamp": "2017-12-14",
       "version": "2.2.9",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/10/10/ruby-2-5-0-preview1-released/",
-      "releaseDate": "2017-10-10",
+      "releaseTimestamp": "2017-10-10",
       "version": "2.5.0-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-4-2-released/",
-      "releaseDate": "2017-09-14",
+      "releaseTimestamp": "2017-09-14",
       "version": "2.4.2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/",
-      "releaseDate": "2017-09-14",
+      "releaseTimestamp": "2017-09-14",
       "version": "2.3.5",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/",
-      "releaseDate": "2017-09-14",
+      "releaseTimestamp": "2017-09-14",
       "version": "2.2.8",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/03/30/ruby-2-3-4-released/",
-      "releaseDate": "2017-03-30",
+      "releaseTimestamp": "2017-03-30",
       "version": "2.3.4",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/03/28/ruby-2-2-7-released/",
-      "releaseDate": "2017-03-28",
+      "releaseTimestamp": "2017-03-28",
       "version": "2.2.7",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2017/03/22/ruby-2-4-1-released/",
-      "releaseDate": "2017-03-22",
+      "releaseTimestamp": "2017-03-22",
       "version": "2.4.1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/12/25/ruby-2-4-0-released/",
-      "releaseDate": "2016-12-25",
+      "releaseTimestamp": "2016-12-25",
       "version": "2.4.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/12/12/ruby-2-4-0-rc1-released/",
-      "releaseDate": "2016-12-12",
+      "releaseTimestamp": "2016-12-12",
       "version": "2.4.0-rc1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/11/21/ruby-2-3-3-released/",
-      "releaseDate": "2016-11-21",
+      "releaseTimestamp": "2016-11-21",
       "version": "2.3.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/11/15/ruby-2-3-2-released/",
-      "releaseDate": "2016-11-15",
+      "releaseTimestamp": "2016-11-15",
       "version": "2.3.2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/11/15/ruby-2-2-6-released/",
-      "releaseDate": "2016-11-15",
+      "releaseTimestamp": "2016-11-15",
       "version": "2.2.6",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/11/09/ruby-2-4-0-preview3-released/",
-      "releaseDate": "2016-11-09",
+      "releaseTimestamp": "2016-11-09",
       "version": "2.4.0-preview3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/09/08/ruby-2-4-0-preview2-released/",
-      "releaseDate": "2016-09-08",
+      "releaseTimestamp": "2016-09-08",
       "version": "2.4.0-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/06/20/ruby-2-4-0-preview1-released/",
-      "releaseDate": "2016-06-20",
+      "releaseTimestamp": "2016-06-20",
       "version": "2.4.0-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/04/26/ruby-2-3-1-released/",
-      "releaseDate": "2016-04-26",
+      "releaseTimestamp": "2016-04-26",
       "version": "2.3.1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/04/26/ruby-2-2-5-released/",
-      "releaseDate": "2016-04-26",
+      "releaseTimestamp": "2016-04-26",
       "version": "2.2.5",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/04/01/ruby-2-1-10-released/",
-      "releaseDate": "2016-04-01",
+      "releaseTimestamp": "2016-04-01",
       "version": "2.1.10",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2016/03/30/ruby-2-1-9-released/",
-      "releaseDate": "2016-03-30",
+      "releaseTimestamp": "2016-03-30",
       "version": "2.1.9",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/12/25/ruby-2-3-0-released/",
-      "releaseDate": "2015-12-25",
+      "releaseTimestamp": "2015-12-25",
       "version": "2.3.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/12/16/ruby-2-2-4-released/",
-      "releaseDate": "2015-12-16",
+      "releaseTimestamp": "2015-12-16",
       "version": "2.2.4",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/12/16/ruby-2-1-8-released/",
-      "releaseDate": "2015-12-16",
+      "releaseTimestamp": "2015-12-16",
       "version": "2.1.8",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/12/16/ruby-2-0-0-p648-released/",
-      "releaseDate": "2015-12-16",
+      "releaseTimestamp": "2015-12-16",
       "version": "2.0.0-p648",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/12/11/ruby-2-3-0-preview2-released/",
-      "releaseDate": "2015-12-11",
+      "releaseTimestamp": "2015-12-11",
       "version": "2.3.0-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/11/11/ruby-2-3-0-preview1-released/",
-      "releaseDate": "2015-11-11",
+      "releaseTimestamp": "2015-11-11",
       "version": "2.3.0-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/08/18/ruby-2-2-3-released/",
-      "releaseDate": "2015-08-18",
+      "releaseTimestamp": "2015-08-18",
       "version": "2.2.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/08/18/ruby-2-1-7-released/",
-      "releaseDate": "2015-08-18",
+      "releaseTimestamp": "2015-08-18",
       "version": "2.1.7",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/08/18/ruby-2-0-0-p647-released/",
-      "releaseDate": "2015-08-18",
+      "releaseTimestamp": "2015-08-18",
       "version": "2.0.0-p647",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/04/13/ruby-2-2-2-released/",
-      "releaseDate": "2015-04-13",
+      "releaseTimestamp": "2015-04-13",
       "version": "2.2.2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/04/13/ruby-2-1-6-released/",
-      "releaseDate": "2015-04-13",
+      "releaseTimestamp": "2015-04-13",
       "version": "2.1.6",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/04/13/ruby-2-0-0-p645-released/",
-      "releaseDate": "2015-04-13",
+      "releaseTimestamp": "2015-04-13",
       "version": "2.0.0-p645",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/03/03/ruby-2-2-1-released/",
-      "releaseDate": "2015-03-03",
+      "releaseTimestamp": "2015-03-03",
       "version": "2.2.1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2015/02/25/ruby-2-0-0-p643-is-released/",
-      "releaseDate": "2015-02-25",
+      "releaseTimestamp": "2015-02-25",
       "version": "2.0.0-p643",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/12/25/ruby-2-2-0-released/",
-      "releaseDate": "2014-12-25",
+      "releaseTimestamp": "2014-12-25",
       "version": "2.2.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/12/18/ruby-2-2-0-rc1-released/",
-      "releaseDate": "2014-12-18",
+      "releaseTimestamp": "2014-12-18",
       "version": "2.2.0-rc1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/11/28/ruby-2-2-0-preview2-released/",
-      "releaseDate": "2014-11-28",
+      "releaseTimestamp": "2014-11-28",
       "version": "2.2.0-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/11/13/ruby-2-1-5-is-released/",
-      "releaseDate": "2014-11-13",
+      "releaseTimestamp": "2014-11-13",
       "version": "2.1.5",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/11/13/ruby-2-0-0-p598-is-released/",
-      "releaseDate": "2014-11-13",
+      "releaseTimestamp": "2014-11-13",
       "version": "2.0.0-p598",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/11/13/ruby-1-9-3-p551-is-released/",
-      "releaseDate": "2014-11-13",
+      "releaseTimestamp": "2014-11-13",
       "version": "1.9.3-p551",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/10/27/ruby-2-1-4-released/",
-      "releaseDate": "2014-10-27",
+      "releaseTimestamp": "2014-10-27",
       "version": "2.1.4",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/10/27/ruby-2-0-0-p594-is-released/",
-      "releaseDate": "2014-10-27",
+      "releaseTimestamp": "2014-10-27",
       "version": "2.0.0-p594",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/10/27/ruby-1-9-3-p550-is-released/",
-      "releaseDate": "2014-10-27",
+      "releaseTimestamp": "2014-10-27",
       "version": "1.9.3-p550",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/09/19/ruby-2-1-3-is-released/",
-      "releaseDate": "2014-09-19",
+      "releaseTimestamp": "2014-09-19",
       "version": "2.1.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/09/19/ruby-2-0-0-p576-is-released/",
-      "releaseDate": "2014-09-19",
+      "releaseTimestamp": "2014-09-19",
       "version": "2.0.0-p576",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/09/18/ruby-2-2-0-preview1-released/",
-      "releaseDate": "2014-09-18",
+      "releaseTimestamp": "2014-09-18",
       "version": "2.2.0-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/08/19/ruby-1-9-2-p330-released/",
-      "releaseDate": "2014-08-19",
+      "releaseTimestamp": "2014-08-19",
       "version": "1.9.2-p330",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/05/16/ruby-1-9-3-p547-released/",
-      "releaseDate": "2014-05-16",
+      "releaseTimestamp": "2014-05-16",
       "version": "1.9.3-p547",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/05/09/ruby-2-1-2-is-released/",
-      "releaseDate": "2014-05-09",
+      "releaseTimestamp": "2014-05-09",
       "version": "2.1.2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/05/09/ruby-2-0-0-p481-is-released/",
-      "releaseDate": "2014-05-09",
+      "releaseTimestamp": "2014-05-09",
       "version": "2.0.0-p481",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/02/24/ruby-2-1-1-is-released/",
-      "releaseDate": "2014-02-24",
+      "releaseTimestamp": "2014-02-24",
       "version": "2.1.1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/02/24/ruby-2-0-0-p451-is-released/",
-      "releaseDate": "2014-02-24",
+      "releaseTimestamp": "2014-02-24",
       "version": "2.0.0-p451",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2014/02/24/ruby-1-9-3-p545-is-released/",
-      "releaseDate": "2014-02-24",
+      "releaseTimestamp": "2014-02-24",
       "version": "1.9.3-p545",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/12/25/ruby-2-1-0-is-released/",
-      "releaseDate": "2013-12-25",
+      "releaseTimestamp": "2013-12-25",
       "version": "2.1.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/12/20/ruby-2-1-0-rc1-is-released/",
-      "releaseDate": "2013-12-20",
+      "releaseTimestamp": "2013-12-20",
       "version": "2.1.0-rc1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/11/22/ruby-2-1-0-preview2-is-released/",
-      "releaseDate": "2013-11-22",
+      "releaseTimestamp": "2013-11-22",
       "version": "2.1.0-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/11/22/ruby-2-0-0-p353-is-released/",
-      "releaseDate": "2013-11-22",
+      "releaseTimestamp": "2013-11-22",
       "version": "2.0.0-p353",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/11/22/ruby-1-9-3-p484-is-released/",
-      "releaseDate": "2013-11-22",
+      "releaseTimestamp": "2013-11-22",
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-      "releaseDate": "2013-09-23",
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       "version": "2.1.0-preview1",
     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/06/27/ruby-2-0-0-p247-is-released/",
-      "releaseDate": "2013-06-27",
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/06/27/ruby-1-9-3-p448-is-released/",
-      "releaseDate": "2013-06-27",
+      "releaseTimestamp": "2013-06-27",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/06/27/ruby-1-8-7-p374-is-released/",
-      "releaseDate": "2013-06-27",
+      "releaseTimestamp": "2013-06-27",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/05/14/ruby-2-0-0-p195-is-released/",
-      "releaseDate": "2013-05-14",
+      "releaseTimestamp": "2013-05-14",
       "version": "2.0.0-p195",
     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/05/14/ruby-1-9-3-p429-is-released/",
-      "releaseDate": "2013-05-14",
+      "releaseTimestamp": "2013-05-14",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/02/24/ruby-2-0-0-p0-is-released/",
-      "releaseDate": "2013-02-24",
+      "releaseTimestamp": "2013-02-24",
       "version": "2.0.0",
     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/02/22/ruby-1-9-3-p392-is-released/",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/02/08/ruby-2-0-0-rc2-is-released/",
-      "releaseDate": "2013-02-08",
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/02/06/ruby-1-9-3-p385-is-released/",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2013/01/17/ruby-1-9-3-p374-is-released/",
-      "releaseDate": "2013-01-17",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/12/25/ruby-1-9-3-p362-is-released/",
-      "releaseDate": "2012-12-25",
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       "version": "1.9.3-p362",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/11/09/ruby-1-9-3-p327-is-released/",
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+      "releaseTimestamp": "2012-11-09",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/10/12/ruby-1-9-3-p286-is-released/",
-      "releaseDate": "2012-10-12",
+      "releaseTimestamp": "2012-10-12",
       "version": "1.9.3-p286",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/06/29/ruby-1-8-7-p370-released/",
-      "releaseDate": "2012-06-29",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/04/21/ruby-1-9-2-p320-is-released/",
-      "releaseDate": "2012-04-21",
+      "releaseTimestamp": "2012-04-21",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/04/20/ruby-1-9-3-p194-is-released/",
-      "releaseDate": "2012-04-20",
+      "releaseTimestamp": "2012-04-20",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2012/02/16/ruby-1-9-3-p125-is-released/",
-      "releaseDate": "2012-02-16",
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       "version": "1.9.3-p125",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2011/10/31/ruby-1-9-3-p0-is-released/",
-      "releaseDate": "2011-10-31",
+      "releaseTimestamp": "2011-10-31",
       "version": "1.9.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2011/09/24/ruby-1-9-3-rc1-has-been-released/",
-      "releaseDate": "2011-09-24",
+      "releaseTimestamp": "2011-09-24",
       "version": "1.9.3-rc1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2011/08/01/ruby-1-9-3-preview1-has-been-released/",
-      "releaseDate": "2011-08-01",
+      "releaseTimestamp": "2011-08-01",
       "version": "1.9.3-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/",
-      "releaseDate": "2011-07-15",
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       "version": "1.9.2-p290",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/",
-      "releaseDate": "2011-07-02",
+      "releaseTimestamp": "2011-07-02",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/12/25/ruby-1-9-2-p136-is-released/",
-      "releaseDate": "2010-12-25",
+      "releaseTimestamp": "2010-12-25",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/12/25/ruby-1-8-7-p330-released/",
-      "releaseDate": "2010-12-25",
+      "releaseTimestamp": "2010-12-25",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/08/18/ruby-1-9-2-released/",
-      "releaseDate": "2010-08-18",
+      "releaseTimestamp": "2010-08-18",
       "version": "1.9.2",
     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/08/16/ruby-1-9-1-p430-is-released/",
-      "releaseDate": "2010-08-16",
+      "releaseTimestamp": "2010-08-16",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/08/16/ruby-1-8-7-p302-is-released/",
-      "releaseDate": "2010-08-16",
+      "releaseTimestamp": "2010-08-16",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/07/11/ruby-1-9-2-rc2-is-released/",
-      "releaseDate": "2010-07-11",
+      "releaseTimestamp": "2010-07-11",
       "version": "1.9.2-rc2",
     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/07/02/ruby-1-9-2-rc1-is-released/",
-      "releaseDate": "2010-07-02",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/07/02/ruby-1-9-1-p429-is-released/",
-      "releaseDate": "2010-07-02",
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     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2010/06/23/ruby-1-8-7-p299-released/",
-      "releaseDate": "2010-06-23",
+      "releaseTimestamp": "2010-06-23",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/12/25/ruby-1-8-7-p248-released/",
-      "releaseDate": "2009-12-25",
+      "releaseTimestamp": "2009-12-25",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/12/07/ruby-1-9-1-p376-is-released/",
-      "releaseDate": "2009-12-07",
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     },
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       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/07/20/ruby-1-9-2-preview-1-released/",
-      "releaseDate": "2009-07-20",
+      "releaseTimestamp": "2009-07-20",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/07/20/ruby-1-9-1-p243-released/",
-      "releaseDate": "2009-07-20",
+      "releaseTimestamp": "2009-07-20",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/05/12/ruby-1-9-1-p129-released/",
-      "releaseDate": "2009-05-12",
+      "releaseTimestamp": "2009-05-12",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/04/18/ruby-1-8-7-p160-and-1-8-6-p368-released/",
-      "releaseDate": "2009-04-18",
+      "releaseTimestamp": "2009-04-18",
       "version": "1.8.7-p160",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/04/18/ruby-1-8-7-p160-and-1-8-6-p368-released/",
-      "releaseDate": "2009-04-18",
+      "releaseTimestamp": "2009-04-18",
       "version": "1.8.6-p368",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2009/01/30/ruby-1-9-1-released/",
-      "releaseDate": "2009-01-30",
+      "releaseTimestamp": "2009-01-30",
       "version": "1.9.1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2008/10/28/ruby-1-9-1-preview-1-released/",
-      "releaseDate": "2008-10-28",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2008/08/11/ruby-1-8-7-p72-and-1-8-6-p287-released/",
-      "releaseDate": "2008-08-11",
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     },
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-      "releaseDate": "2008-08-11",
+      "releaseTimestamp": "2008-08-11",
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     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2008/05/31/ruby-1-8-7-has-been-released/",
-      "releaseDate": "2008-05-31",
+      "releaseTimestamp": "2008-05-31",
       "version": "1.8.7",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2007/12/25/ruby-1-9-0-released/",
-      "releaseDate": "2007-12-25",
+      "releaseTimestamp": "2007-12-25",
       "version": "1.9.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2007/03/12/ruby-1-8-6-released/",
-      "releaseDate": "2007-03-12",
+      "releaseTimestamp": "2007-03-12",
       "version": "1.8.6",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2006/08/29/ruby-1-8-5-released/",
-      "releaseDate": "2006-08-29",
+      "releaseTimestamp": "2006-08-29",
       "version": "1.8.5",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2005/12/24/ruby-184-released/",
-      "releaseDate": "2005-12-24",
+      "releaseTimestamp": "2005-12-24",
       "version": "1.8.4",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2005/12/14/ruby-184-preview-2-released/",
-      "releaseDate": "2005-12-14",
+      "releaseTimestamp": "2005-12-14",
       "version": "1.8.4-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2005/09/21/ruby-183-released/",
-      "releaseDate": "2005-09-21",
+      "releaseTimestamp": "2005-09-21",
       "version": "1.8.3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2004/12/26/ruby-182-released/",
-      "releaseDate": "2004-12-26",
+      "releaseTimestamp": "2004-12-26",
       "version": "1.8.2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2004/12/22/182-preview4-released/",
-      "releaseDate": "2004-12-22",
+      "releaseTimestamp": "2004-12-22",
       "version": "1.8.2-preview4",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2004/11/08/182-preview3-released/",
-      "releaseDate": "2004-11-08",
+      "releaseTimestamp": "2004-11-08",
       "version": "1.8.2-preview3",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2004/07/30/ruby-182-preview2-released/",
-      "releaseDate": "2004-07-30",
+      "releaseTimestamp": "2004-07-30",
       "version": "1.8.2-preview2",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2004/07/21/ruby-182-preview1-released/",
-      "releaseDate": "2004-07-21",
+      "releaseTimestamp": "2004-07-21",
       "version": "1.8.2-preview1",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2003/08/04/ruby-180-released/",
-      "releaseDate": "2003-08-04",
+      "releaseTimestamp": "2003-08-04",
       "version": "1.8.0",
     },
     Object {
       "changelogUrl": "https://www.ruby-lang.org/en/news/2002/03/01/167-is-released/",
-      "releaseDate": "2002-03-01",
+      "releaseTimestamp": "2002-03-01",
       "version": "1.6.7",
     },
   ],
diff --git a/test/datasource/rubygems/__snapshots__/index.spec.ts.snap b/test/datasource/rubygems/__snapshots__/index.spec.ts.snap
index 1c1ef2c862eb9f54bd63542d32c2a90ee9ce7101..b0abb6f6559d19fec12ee30495a73c2737a72b5b 100644
--- a/test/datasource/rubygems/__snapshots__/index.spec.ts.snap
+++ b/test/datasource/rubygems/__snapshots__/index.spec.ts.snap
@@ -20,2373 +20,2373 @@ Object {
   "homepage": "http://rubyonrails.org",
   "releases": Array [
     Object {
-      "releaseDate": "2018-12-04T18:15:02.233Z",
+      "releaseTimestamp": "2018-12-04T18:15:02.233Z",
       "rubyPlatform": "ruby",
       "rubyVersion": ">= 2.2.2",
       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.2",
     },
     Object {
-      "releaseDate": "2018-11-28T22:55:23.827Z",
+      "releaseTimestamp": "2018-11-28T22:55:23.827Z",
       "rubyPlatform": "ruby",
       "rubyVersion": ">= 2.2.2",
       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.2.rc1",
     },
     Object {
-      "releaseDate": "2018-11-27T20:14:16.796Z",
+      "releaseTimestamp": "2018-11-27T20:14:16.796Z",
       "rubyPlatform": "ruby",
       "rubyVersion": ">= 2.2.2",
       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.1.1",
     },
     Object {
-      "releaseDate": "2018-08-07T21:44:52.020Z",
+      "releaseTimestamp": "2018-08-07T21:44:52.020Z",
       "rubyPlatform": "ruby",
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.1",
     },
     Object {
-      "releaseDate": "2018-07-30T20:22:38.749Z",
+      "releaseTimestamp": "2018-07-30T20:22:38.749Z",
       "rubyPlatform": "ruby",
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.1.rc1",
     },
     Object {
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+      "releaseTimestamp": "2018-04-09T20:07:04.834Z",
       "rubyPlatform": "ruby",
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.0",
     },
     Object {
-      "releaseDate": "2018-03-20T17:54:58.165Z",
+      "releaseTimestamp": "2018-03-20T17:54:58.165Z",
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.2.0.rc2",
     },
     Object {
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+      "releaseTimestamp": "2018-01-30T23:38:56.843Z",
       "rubyPlatform": "ruby",
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       "version": "5.2.0.rc1",
     },
     Object {
-      "releaseDate": "2017-11-28T05:04:37.765Z",
+      "releaseTimestamp": "2017-11-28T05:04:37.765Z",
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       "version": "5.2.0.beta2",
     },
     Object {
-      "releaseDate": "2017-11-27T19:19:13.809Z",
+      "releaseTimestamp": "2017-11-27T19:19:13.809Z",
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       "version": "5.2.0.beta1",
     },
     Object {
-      "releaseDate": "2018-11-27T20:11:47.585Z",
+      "releaseTimestamp": "2018-11-27T20:11:47.585Z",
       "rubyPlatform": "ruby",
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       "version": "5.1.6.1",
     },
     Object {
-      "releaseDate": "2018-03-29T18:29:03.149Z",
+      "releaseTimestamp": "2018-03-29T18:29:03.149Z",
       "rubyPlatform": "ruby",
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       "version": "5.1.6",
     },
     Object {
-      "releaseDate": "2018-02-14T20:02:02.541Z",
+      "releaseTimestamp": "2018-02-14T20:02:02.541Z",
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.1.5",
     },
     Object {
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+      "releaseTimestamp": "2018-02-01T19:00:37.520Z",
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       "version": "5.1.5.rc1",
     },
     Object {
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+      "releaseTimestamp": "2017-09-08T00:52:07.791Z",
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.1.4",
     },
     Object {
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+      "releaseTimestamp": "2017-08-24T19:37:37.728Z",
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       "version": "5.1.4.rc1",
     },
     Object {
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       "rubygemsVersion": ">= 1.8.11",
       "version": "5.1.3",
     },
     Object {
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+      "releaseTimestamp": "2017-07-31T19:12:53.241Z",
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       "version": "5.1.3.rc3",
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     Object {
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     Object {
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