diff --git a/package.json b/package.json
index dd1fb9a4..0bea161f 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "ember-maybe-import-regenerator": "0.1.6",
     "ember-qunit": "4.6.0",
     "ember-resolver": "8.0.2",
-    "ember-source": "3.20.4",
+    "ember-source": "3.21.0",
     "ember-try": "1.4.0",
     "ember-welcome-page": "4.0.0",
     "eslint-plugin-ember": "8.12.0",
diff --git a/yarn.lock b/yarn.lock
index fb8e1928..9c185993 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8664,10 +8664,10 @@ ember-source-channel-url@^2.0.1:
   dependencies:
     got "^8.0.1"
 
-ember-source@3.20.4:
-  version "3.20.4"
-  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.20.4.tgz#582545ae3b20de5ffd9f8b43c42c94815e592291"
-  integrity sha512-ycWlaq7W63S3Nh7pMRU4oXNirBB9MbNGDN6hUgs3/qc1gjOUVGfGv0p2NPVcKXgqWtbiqrWGqCbp1iTay2MUpA==
+ember-source@3.21.0:
+  version "3.21.0"
+  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.21.0.tgz#36ff63584438fba3a336529c30c1aeb14caba9e7"
+  integrity sha512-BoNAhEjB4zb3TuJMzUK81ivz7S6IYLO4MRFfEN8x6nxf3hL9HE0D2QdbqlX9j54xkqssPz5iqmR6/LEEbgP9pA==
   dependencies:
     "@babel/helper-module-imports" "^7.8.3"
     "@babel/plugin-transform-block-scoping" "^7.8.3"