diff --git a/package.json b/package.json
index 63648f981..98ea61657 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-qunit": "^4.6.0",
     "ember-resolver": "^8.0.2",
-    "ember-source": "~3.20.3",
+    "ember-source": "~3.20.4",
     "eslint": "^5.16.0",
     "eslint-config-prettier": "^6.11.0",
     "eslint-plugin-prettier": "^3.1.4",
diff --git a/yarn.lock b/yarn.lock
index 7b6ecd020..c633252b4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1017,21 +1017,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
-"@babel/plugin-transform-block-scoping@^7.10.4":
+"@babel/plugin-transform-block-scoping@^7.10.4", "@babel/plugin-transform-block-scoping@^7.8.3":
   version "7.10.5"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.10.5.tgz#b81b8aafefbfe68f0f65f7ef397b9ece68a6037d"
   integrity sha512-6Ycw3hjpQti0qssQcA6AMSFDHeNJ++R6dIMnpRqUjFeBBTmTDPa8zgF90OVfTvAo11mXZTlVUViY1g8ffrURLg==
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
-"@babel/plugin-transform-block-scoping@^7.8.3":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.10.1.tgz#47092d89ca345811451cd0dc5d91605982705d5e"
-  integrity sha512-8bpWG6TtF5akdhIm/uWTyjHqENpy13Fx8chg7pFH875aNLwX8JxIxqm08gmAT+Whe6AOmaTeLPe7dpLbXt+xUw==
-  dependencies:
-    "@babel/helper-plugin-utils" "^7.10.1"
-    lodash "^4.17.13"
-
 "@babel/plugin-transform-classes@^7.10.4":
   version "7.10.4"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-classes/-/plugin-transform-classes-7.10.4.tgz#405136af2b3e218bc4a1926228bc917ab1a0adc7"
@@ -5732,10 +5724,10 @@ ember-source-channel-url@^2.0.1:
   dependencies:
     got "^8.0.1"
 
-ember-source@~3.20.3:
-  version "3.20.3"
-  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.20.3.tgz#fdc0e8d9a402985783a2c53729f75abbb7b2ac95"
-  integrity sha512-Fpz0eVFcL4s74d2mw5D3RFGlhRcljB6N4RyjsuumwYTlg7UMrkDdlHy7A1ZI2tDw2Cz7uE7W2dKzSnCQcZGcVQ==
+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==
   dependencies:
     "@babel/helper-module-imports" "^7.8.3"
     "@babel/plugin-transform-block-scoping" "^7.8.3"