diff --git a/package.json b/package.json
index d6b5f29..0c609d3 100644
--- a/package.json
+++ b/package.json
@@ -157,7 +157,7 @@
     "sass-loader": "6.0.7",
     "style-loader": "0.23.1",
     "webpack-dev-server": "2.11.5",
-    "webpack-merge": "4.1.4"
+    "webpack-merge": "6.0.1"
   },
   "jest": {
     "collectCoverageFrom": [
diff --git a/yarn.lock b/yarn.lock
index 96589fd..0f3baa3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2892,6 +2892,15 @@ clone-deep@^2.0.1:
     kind-of "^6.0.0"
     shallow-clone "^1.0.0"
 
+clone-deep@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/clone-deep/-/clone-deep-4.0.1.tgz#c19fd9bdbbf85942b4fd979c84dcf7d5f07c2387"
+  integrity sha512-neHB9xuzh/wk0dIHweyAXv2aPGZIVk3pLMe+/RNzINf17fe0OG96QroktYAUm7SM1PBnzTabaLboqqxDyMU+SQ==
+  dependencies:
+    is-plain-object "^2.0.4"
+    kind-of "^6.0.2"
+    shallow-clone "^3.0.0"
+
 clone@^1.0.2:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/clone/-/clone-1.0.4.tgz#da309cc263df15994c688ca902179ca3c7cd7c7e"
@@ -5711,6 +5720,11 @@ flat-cache@^2.0.1:
     rimraf "2.6.3"
     write "1.0.3"
 
+flat@^5.0.2:
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/flat/-/flat-5.0.2.tgz#8ca6fe332069ffa9d324c327198c598259ceb241"
+  integrity sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ==
+
 flatted@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/flatted/-/flatted-2.0.2.tgz#4575b21e2bcee7434aa9be662f4b7b5f9c2b5138"
@@ -12307,6 +12321,13 @@ shallow-clone@^1.0.0:
     kind-of "^5.0.0"
     mixin-object "^2.0.1"
 
+shallow-clone@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/shallow-clone/-/shallow-clone-3.0.1.tgz#8f2981ad92531f55035b01fb230769a40e02efa3"
+  integrity sha512-/6KqX+GVUdqPuPPd2LxDDxzX6CAbjJehAAOKlNpqqUpAqPM6HeL8f+o3a+JsyGjn2lv0WY8UsTgUJjU9Ok55NA==
+  dependencies:
+    kind-of "^6.0.2"
+
 shallowequal@^1.0.1:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/shallowequal/-/shallowequal-1.1.0.tgz#188d521de95b9087404fd4dcb68b13df0ae4e7f8"
@@ -14033,12 +14054,14 @@ webpack-manifest-plugin@1.3.2:
     fs-extra "^0.30.0"
     lodash ">=3.5 <5"
 
-webpack-merge@4.1.4:
-  version "4.1.4"
-  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-4.1.4.tgz#0fde38eabf2d5fd85251c24a5a8c48f8a3f4eb7b"
-  integrity sha512-TmSe1HZKeOPey3oy1Ov2iS3guIZjWvMT2BBJDzzT5jScHTjVC3mpjJofgueEzaEd6ibhxRDD6MIblDr8tzh8iQ==
+webpack-merge@6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-6.0.1.tgz#50c776868e080574725abc5869bd6e4ef0a16c6a"
+  integrity sha512-hXXvrjtx2PLYx4qruKl+kyRSLc52V+cCvMxRjmKwoA+CBbbF5GfIBtR6kCvl0fYGqTUPKB+1ktVmTHqMOzgCBg==
   dependencies:
-    lodash "^4.17.5"
+    clone-deep "^4.0.1"
+    flat "^5.0.2"
+    wildcard "^2.0.1"
 
 webpack-sources@^1.0.1, webpack-sources@^1.1.0:
   version "1.4.3"
@@ -14286,6 +14309,11 @@ widest-line@^2.0.0:
   dependencies:
     string-width "^2.1.1"
 
+wildcard@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/wildcard/-/wildcard-2.0.1.tgz#5ab10d02487198954836b6349f74fff961e10f67"
+  integrity sha512-CC1bOL87PIWSBhDcTrdeLo6eGT7mCFtrg0uIJtqJUFyK+eJnzl8A1niH56uu7KMa5XFrtiV+AQuHO3n7DsHnLQ==
+
 window-size@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.0.tgz#5438cd2ea93b202efa3a19fe8887aee7c94f9c9d"