diff --git a/package.json b/package.json
index c3c9b7da..db63f575 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@ember/render-modifiers": "^2.0.0",
     "broccoli-funnel": "^3.0.3",
     "broccoli-merge-trees": "^4.2.0",
-    "deepmerge": "^4.2.2",
+    "deepmerge": "^4.3.1",
     "ember-auto-import": "^2.6.3",
     "ember-cli-babel": "^7.26.11",
     "ember-cli-htmlbars": "^6.2.0",
diff --git a/vendor/shims/deepmerge.js b/vendor/shims/deepmerge.js
deleted file mode 100644
index 74d18de3..00000000
--- a/vendor/shims/deepmerge.js
+++ /dev/null
@@ -1,13 +0,0 @@
-(function() {
-  function vendorModule() {
-    'use strict';
-
-    return {
-    /* eslint-disable-next-line dot-notation */
-      'default': self['deepmerge'],
-      __esModule: true
-    };
-  }
-
-  define('deepmerge', [], vendorModule);
-})();
diff --git a/yarn.lock b/yarn.lock
index 5e0be423..afea53bd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4023,7 +4023,7 @@ deep-is@^0.1.3, deep-is@~0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.4.tgz#a6f2dce612fadd2ef1f519b73551f17e85199831"
   integrity sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==
 
-deepmerge@^4.2.2:
+deepmerge@^4.3.1:
   version "4.3.1"
   resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-4.3.1.tgz#44b5f2147cd3b00d4b56137685966f26fd25dd4a"
   integrity sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A==