diff --git a/package-lock.json b/package-lock.json
index 5627c06..772a2f1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -56,7 +56,7 @@
         "scratch-gui": "github:scratchfoundation/scratch-gui#scratch-desktop-v3.30.1",
         "uuid": "8.3.2",
         "webpack": "4.47.0",
-        "webpack-merge": "4.2.2"
+        "webpack-merge": "6.0.1"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -5523,6 +5523,21 @@
         "node": ">=8"
       }
     },
+    "node_modules/clone-deep": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/clone-deep/-/clone-deep-4.0.1.tgz",
+      "integrity": "sha512-neHB9xuzh/wk0dIHweyAXv2aPGZIVk3pLMe+/RNzINf17fe0OG96QroktYAUm7SM1PBnzTabaLboqqxDyMU+SQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "is-plain-object": "^2.0.4",
+        "kind-of": "^6.0.2",
+        "shallow-clone": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/clone-response": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/clone-response/-/clone-response-1.0.3.tgz",
@@ -8846,6 +8861,16 @@
         "node": ">= 4.0.0"
       }
     },
+    "node_modules/electron-webpack/node_modules/webpack-merge": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-4.2.2.tgz",
+      "integrity": "sha512-TUE1UGoTX2Cd42j3krGYqObZbOD+xF7u28WB7tfUordytSjbWTIjK/8V0amkBfTYN4/pB/GIDlJZZ657BGG19g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "lodash": "^4.17.15"
+      }
+    },
     "node_modules/electron-webpack/node_modules/wrap-ansi": {
       "version": "6.2.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
@@ -10942,6 +10967,16 @@
         "node": ">= 0.6.x"
       }
     },
+    "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,
+      "license": "BSD-3-Clause",
+      "bin": {
+        "flat": "cli.js"
+      }
+    },
     "node_modules/flat-cache": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/flat-cache/-/flat-cache-3.2.0.tgz",
@@ -20411,6 +20446,19 @@
         "sha.js": "bin.js"
       }
     },
+    "node_modules/shallow-clone": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/shallow-clone/-/shallow-clone-3.0.1.tgz",
+      "integrity": "sha512-/6KqX+GVUdqPuPPd2LxDDxzX6CAbjJehAAOKlNpqqUpAqPM6HeL8f+o3a+JsyGjn2lv0WY8UsTgUJjU9Ok55NA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "kind-of": "^6.0.2"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/shallow-copy": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/shallow-copy/-/shallow-copy-0.0.1.tgz",
@@ -24310,13 +24358,18 @@
       }
     },
     "node_modules/webpack-merge": {
-      "version": "4.2.2",
-      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-4.2.2.tgz",
-      "integrity": "sha512-TUE1UGoTX2Cd42j3krGYqObZbOD+xF7u28WB7tfUordytSjbWTIjK/8V0amkBfTYN4/pB/GIDlJZZ657BGG19g==",
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-6.0.1.tgz",
+      "integrity": "sha512-hXXvrjtx2PLYx4qruKl+kyRSLc52V+cCvMxRjmKwoA+CBbbF5GfIBtR6kCvl0fYGqTUPKB+1ktVmTHqMOzgCBg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "lodash": "^4.17.15"
+        "clone-deep": "^4.0.1",
+        "flat": "^5.0.2",
+        "wildcard": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=18.0.0"
       }
     },
     "node_modules/webpack-sources": {
@@ -24733,6 +24786,13 @@
         "node": ">=8"
       }
     },
+    "node_modules/wildcard": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/wildcard/-/wildcard-2.0.1.tgz",
+      "integrity": "sha512-CC1bOL87PIWSBhDcTrdeLo6eGT7mCFtrg0uIJtqJUFyK+eJnzl8A1niH56uu7KMa5XFrtiV+AQuHO3n7DsHnLQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
diff --git a/package.json b/package.json
index e4ab03d..af8871f 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "scratch-gui": "github:scratchfoundation/scratch-gui#scratch-desktop-v3.30.1",
     "uuid": "8.3.2",
     "webpack": "4.47.0",
-    "webpack-merge": "4.2.2"
+    "webpack-merge": "6.0.1"
   },
   "resolutions": {
     "upath": "1.2.0"