diff --git a/package.json b/package.json
index aa0229709febf632ea1a512072b6d8f451e1b8df..8620212c4f3b8219a2d07926f18314ef5dbce77e 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,7 @@
     "traverse": "0.6.6",
     "upath": "1.0.4",
     "vso-node-api": "6.3.2",
-    "yarn": "1.3.2"
+    "yarn": "1.5.1"
   },
   "devDependencies": {
     "babel-plugin-transform-object-rest-spread": "6.26.0",
diff --git a/yarn.lock b/yarn.lock
index 6f93fbe41700f45bbca5bafe1308d8bf7afe00e7..a8e7502fa509ef2fe5632ee956b54d6ea08ed517 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5954,6 +5954,6 @@ yargs@~3.10.0:
     decamelize "^1.0.0"
     window-size "0.1.0"
 
-yarn@1.3.2:
-  version "1.3.2"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.3.2.tgz#5939762581b5b4ddcd3418c0f6be42df3aee195f"
+yarn@1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.5.1.tgz#e8680360e832ac89521eb80dad3a7bc27a40bab4"