diff --git a/lib/manager/gradle/index.ts b/lib/manager/gradle/index.ts
index eb3ad53adec68335802d203839cc0758d9cb067a..0817e065c7d6e7ecb0a8a4c2621d2b8236e3f392 100644
--- a/lib/manager/gradle/index.ts
+++ b/lib/manager/gradle/index.ts
@@ -18,7 +18,6 @@ import {
 import { PackageFile, ExtractConfig, Upgrade } from '../common';
 import { platform } from '../../platform';
 import { LANGUAGE_JAVA } from '../../constants/languages';
-import { MANAGER_GRADLE } from '../../constants/managers';
 import { DATASOURCE_MAVEN } from '../../constants/data-binary-source';
 import { BinarySource } from '../../util/exec/common';
 
@@ -144,7 +143,6 @@ export async function extractAllPackageFiles(
     if (content) {
       gradleFiles.push({
         packageFile,
-        manager: MANAGER_GRADLE,
         datasource: DATASOURCE_MAVEN,
         deps: dependencies,
       });
diff --git a/lib/manager/npm/extract/index.ts b/lib/manager/npm/extract/index.ts
index 387aa2af3a5b703e3d1a6d7ae6290327bf5c0f99..449dc6f03ad8afd8199b75530db4d5679aaaada2 100644
--- a/lib/manager/npm/extract/index.ts
+++ b/lib/manager/npm/extract/index.ts
@@ -18,7 +18,6 @@ import { NpmPackage } from './common';
 import { platform } from '../../../platform';
 import { CONFIG_VALIDATION } from '../../../constants/error-messages';
 import { VERSION_SCHEME_NODE } from '../../../constants/version-schemes';
-import { MANAGER_NPM } from '../../../constants/managers';
 import {
   DATASOURCE_GITHUB,
   DATASOURCE_NPM,
@@ -354,7 +353,6 @@ export async function extractAllPackageFiles(
       if (deps) {
         npmFiles.push({
           packageFile,
-          manager: MANAGER_NPM,
           ...deps,
         });
       }
diff --git a/lib/manager/pub/extract.ts b/lib/manager/pub/extract.ts
index b828733ecb800e9129b76058885bc0392a2209d8..2dd2baff123fc791a7077911bbe269af83e43b66 100644
--- a/lib/manager/pub/extract.ts
+++ b/lib/manager/pub/extract.ts
@@ -2,7 +2,6 @@ import { safeLoad } from 'js-yaml';
 import { isValid } from '../../versioning/npm/index';
 import { logger } from '../../logger';
 import { PackageDependency, PackageFile } from '../common';
-import { MANAGER_PUB } from '../../constants/managers';
 import { DATASOURCE_DART } from '../../constants/data-binary-source';
 
 function getDeps(
@@ -51,7 +50,6 @@ export function extractPackageFile(
     if (deps.length) {
       return {
         packageFile,
-        manager: MANAGER_PUB,
         datasource: DATASOURCE_DART,
         deps,
       };
diff --git a/test/manager/gradle/__snapshots__/index.spec.ts.snap b/test/manager/gradle/__snapshots__/index.spec.ts.snap
index 06f1e8de212e0bd15557c59c30feb8408b342cf2..7e8e6c8d3b3a5759ae327e116211019189bfb32b 100644
--- a/test/manager/gradle/__snapshots__/index.spec.ts.snap
+++ b/test/manager/gradle/__snapshots__/index.spec.ts.snap
@@ -168,7 +168,6 @@ Array [
         ],
       },
     ],
-    "manager": "gradle",
     "packageFile": "build.gradle",
   },
   Object {
@@ -227,7 +226,6 @@ Array [
         ],
       },
     ],
-    "manager": "gradle",
     "packageFile": "subproject/build.gradle",
   },
 ]
@@ -313,7 +311,6 @@ Array [
         ],
       },
     ],
-    "manager": "gradle",
     "packageFile": "foo/build.gradle",
   },
 ]
@@ -399,7 +396,6 @@ Array [
         ],
       },
     ],
-    "manager": "gradle",
     "packageFile": "build.gradle.kts",
   },
   Object {
@@ -458,7 +454,6 @@ Array [
         ],
       },
     ],
-    "manager": "gradle",
     "packageFile": "subproject/build.gradle.kts",
   },
 ]
@@ -613,7 +608,6 @@ Array [
         ],
       },
     ],
-    "manager": "gradle",
     "packageFile": "build.gradle",
   },
 ]
diff --git a/test/manager/pub/__snapshots__/extract.spec.ts.snap b/test/manager/pub/__snapshots__/extract.spec.ts.snap
index a586ba4fad3dcf04de0cd867364cdf15cd9c4590..890b12bb617c357ce6b0da68a6649f4fc3229e07 100644
--- a/test/manager/pub/__snapshots__/extract.spec.ts.snap
+++ b/test/manager/pub/__snapshots__/extract.spec.ts.snap
@@ -37,7 +37,6 @@ Object {
       "depType": "dev_dependencies",
     },
   ],
-  "manager": "pub",
   "packageFile": "pubspec.yaml",
 }
 `;
diff --git a/test/workers/repository/extract/__snapshots__/manager-files.spec.ts.snap b/test/workers/repository/extract/__snapshots__/manager-files.spec.ts.snap
index d98965c9528d496924571488ca743e30d57f28af..f98c29eb44e1dea6e79480384c07fd6d7046cfe4 100644
--- a/test/workers/repository/extract/__snapshots__/manager-files.spec.ts.snap
+++ b/test/workers/repository/extract/__snapshots__/manager-files.spec.ts.snap
@@ -8,7 +8,6 @@ Array [
     "lernaClient": "yarn",
     "lernaDir": ".",
     "lernaPackages": undefined,
-    "manager": "npm",
     "npmLock": "package-lock.json",
     "npmrc": "{}",
     "packageFile": "package.json",