diff --git a/package.json b/package.json
index d771cae..3903d4d 100644
--- a/package.json
+++ b/package.json
@@ -65,6 +65,6 @@
   ],
   "devDependencies": {
     "@magica11y/cauldron": "^1.0.17",
-    "webpack-merge": "^5.8.0"
+    "webpack-merge": "^5.10.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 5f06371..eb2f42b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3246,6 +3246,11 @@ flat-cache@^3.0.4:
     flatted "^3.1.0"
     rimraf "^3.0.2"
 
+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@^3.1.0:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.2.1.tgz#bbef080d95fca6709362c73044a1634f7c6e7d05"
@@ -6493,7 +6498,16 @@ webpack-cli@^4.7.2:
     v8-compile-cache "^2.2.0"
     webpack-merge "^5.7.3"
 
-webpack-merge@^5.7.3, webpack-merge@^5.8.0:
+webpack-merge@^5.10.0:
+  version "5.10.0"
+  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-5.10.0.tgz#a3ad5d773241e9c682803abf628d4cd62b8a4177"
+  integrity sha512-+4zXKdx7UnO+1jaN4l2lHVD+mFvnlZQP/6ljaJVb4SZiwIKeUnrT5l0gkT8z+n4hKpC+jpOv6O9R+gLtag7pSA==
+  dependencies:
+    clone-deep "^4.0.1"
+    flat "^5.0.2"
+    wildcard "^2.0.0"
+
+webpack-merge@^5.7.3:
   version "5.8.0"
   resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-5.8.0.tgz#2b39dbf22af87776ad744c390223731d30a68f61"
   integrity sha512-/SaI7xY0831XwP6kzuwhKWVKDP9t1QY1h65lAFLbZqMPIuYcD9QAW4u9STIbU9kaJbPBB/geU/gLr1wDjOhQ+Q==