diff --git a/package-lock.json b/package-lock.json
index 46de08d4..0e910a91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
         "webpack": "5.88.2",
         "webpack-cli": "4.10.0",
         "webpack-dev-server": "4.15.1",
-        "webpack-merge": "5.9.0"
+        "webpack-merge": "5.10.0"
       }
     },
     "node_modules/@discoveryjs/json-ext": {
@@ -1987,6 +1987,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/flat": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/flat/-/flat-5.0.2.tgz",
+      "integrity": "sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ==",
+      "dev": true,
+      "bin": {
+        "flat": "cli.js"
+      }
+    },
     "node_modules/follow-redirects": {
       "version": "1.15.0",
       "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.0.tgz",
@@ -4714,12 +4723,13 @@
       }
     },
     "node_modules/webpack-merge": {
-      "version": "5.9.0",
-      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-5.9.0.tgz",
-      "integrity": "sha512-6NbRQw4+Sy50vYNTw7EyOn41OZItPiXB8GNv3INSoe3PSFaHJEz3SHTrYVaRm2LilNGnFUzh0FAwqPEmU/CwDg==",
+      "version": "5.10.0",
+      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-5.10.0.tgz",
+      "integrity": "sha512-+4zXKdx7UnO+1jaN4l2lHVD+mFvnlZQP/6ljaJVb4SZiwIKeUnrT5l0gkT8z+n4hKpC+jpOv6O9R+gLtag7pSA==",
       "dev": true,
       "dependencies": {
         "clone-deep": "^4.0.1",
+        "flat": "^5.0.2",
         "wildcard": "^2.0.0"
       },
       "engines": {
@@ -6418,6 +6428,12 @@
         }
       }
     },
+    "flat": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/flat/-/flat-5.0.2.tgz",
+      "integrity": "sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ==",
+      "dev": true
+    },
     "follow-redirects": {
       "version": "1.15.0",
       "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.0.tgz",
@@ -8458,12 +8474,13 @@
       }
     },
     "webpack-merge": {
-      "version": "5.9.0",
-      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-5.9.0.tgz",
-      "integrity": "sha512-6NbRQw4+Sy50vYNTw7EyOn41OZItPiXB8GNv3INSoe3PSFaHJEz3SHTrYVaRm2LilNGnFUzh0FAwqPEmU/CwDg==",
+      "version": "5.10.0",
+      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-5.10.0.tgz",
+      "integrity": "sha512-+4zXKdx7UnO+1jaN4l2lHVD+mFvnlZQP/6ljaJVb4SZiwIKeUnrT5l0gkT8z+n4hKpC+jpOv6O9R+gLtag7pSA==",
       "dev": true,
       "requires": {
         "clone-deep": "^4.0.1",
+        "flat": "^5.0.2",
         "wildcard": "^2.0.0"
       }
     },
diff --git a/package.json b/package.json
index cf13af28..c6c1ebbe 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "webpack": "5.88.2",
     "webpack-cli": "4.10.0",
     "webpack-dev-server": "4.15.1",
-    "webpack-merge": "5.9.0"
+    "webpack-merge": "5.10.0"
   },
   "dependencies": {
     "excalibur": "0.28.6"