diff --git a/desktop/package-lock.json b/desktop/package-lock.json
index 1e7c6149aa..6886b8db39 100644
--- a/desktop/package-lock.json
+++ b/desktop/package-lock.json
@@ -3998,18 +3998,6 @@
         "electron-winstaller": "5.4.0"
       }
     },
-    "node_modules/electron-devtools-installer": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/electron-devtools-installer/-/electron-devtools-installer-3.2.0.tgz",
-      "integrity": "sha512-t3UczsYugm4OAbqvdImMCImIMVdFzJAHgbwHpkl5jmfu1izVgUcP/mnrPqJIpEeCK1uZGpt+yHgWEN+9EwoYhQ==",
-      "dev": true,
-      "dependencies": {
-        "rimraf": "^3.0.2",
-        "semver": "^7.2.1",
-        "tslib": "^2.1.0",
-        "unzip-crx-3": "^0.2.0"
-      }
-    },
     "node_modules/electron-publish": {
       "version": "26.15.3",
       "resolved": "https://registry.npmjs.org/electron-publish/-/electron-publish-26.15.3.tgz",
@@ -8049,21 +8037,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/rimraf": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
-      "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==",
-      "dev": true,
-      "dependencies": {
-        "glob": "^7.1.3"
-      },
-      "bin": {
-        "rimraf": "bin.js"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
     "node_modules/roarr": {
       "version": "2.15.4",
       "resolved": "https://registry.npmjs.org/roarr/-/roarr-2.15.4.tgz",
@@ -9755,7 +9728,7 @@
         "cross-env": "^7.0.3",
         "electron": "42.5.1",
         "electron-builder": "26.15.7",
-        "electron-devtools-installer": "^3.2.0",
+        "electron-devtools-installer": "file:../../vendor/electron-devtools-installer-0.0.0-development.tgz",
         "eslint-plugin-react": "^7.36.1",
         "eslint-plugin-react-compiler": "^19.1.0-rc.2",
         "eslint-plugin-react-hooks": "^5.2.0",
@@ -9799,6 +9772,16 @@
         }
       }
     },
+    "packages/mullvad-vpn/node_modules/electron-devtools-installer": {
+      "version": "0.0.0-development",
+      "resolved": "file:vendor/electron-devtools-installer-0.0.0-development.tgz",
+      "integrity": "sha512-I9pyvzANTUyaQ3V0KbLpxHvhsNtuG2OylHenKFDdjazXxPuD+gMjiSo6ouv6DWn+4naLI9NUUfoDaiGfhNLChA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "unzip-crx-3": "^0.2.0"
+      }
+    },
     "packages/mullvad-vpn/node_modules/react": {
       "version": "19.1.1",
       "resolved": "https://registry.npmjs.org/react/-/react-19.1.1.tgz",
@@ -12527,18 +12510,6 @@
         "electron-winstaller": "5.4.0"
       }
     },
-    "electron-devtools-installer": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/electron-devtools-installer/-/electron-devtools-installer-3.2.0.tgz",
-      "integrity": "sha512-t3UczsYugm4OAbqvdImMCImIMVdFzJAHgbwHpkl5jmfu1izVgUcP/mnrPqJIpEeCK1uZGpt+yHgWEN+9EwoYhQ==",
-      "dev": true,
-      "requires": {
-        "rimraf": "^3.0.2",
-        "semver": "^7.2.1",
-        "tslib": "^2.1.0",
-        "unzip-crx-3": "^0.2.0"
-      }
-    },
     "electron-publish": {
       "version": "26.15.3",
       "resolved": "https://registry.npmjs.org/electron-publish/-/electron-publish-26.15.3.tgz",
@@ -14517,7 +14488,7 @@
         "cross-env": "^7.0.3",
         "electron": "42.5.1",
         "electron-builder": "26.15.7",
-        "electron-devtools-installer": "^3.2.0",
+        "electron-devtools-installer": "file:../../vendor/electron-devtools-installer-0.0.0-development.tgz",
         "eslint-plugin-react": "^7.36.1",
         "eslint-plugin-react-compiler": "^19.1.0-rc.2",
         "eslint-plugin-react-hooks": "^5.2.0",
@@ -14556,6 +14527,14 @@
             "@rolldown/pluginutils": "^1.0.1"
           }
         },
+        "electron-devtools-installer": {
+          "version": "file:../../vendor/electron-devtools-installer-0.0.0-development.tgz",
+          "integrity": "sha512-I9pyvzANTUyaQ3V0KbLpxHvhsNtuG2OylHenKFDdjazXxPuD+gMjiSo6ouv6DWn+4naLI9NUUfoDaiGfhNLChA==",
+          "dev": true,
+          "requires": {
+            "unzip-crx-3": "^0.2.0"
+          }
+        },
         "react": {
           "version": "19.1.1",
           "resolved": "https://registry.npmjs.org/react/-/react-19.1.1.tgz",
@@ -15340,15 +15319,6 @@
       "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==",
       "dev": true
     },
-    "rimraf": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
-      "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==",
-      "dev": true,
-      "requires": {
-        "glob": "^7.1.3"
-      }
-    },
     "roarr": {
       "version": "2.15.4",
       "resolved": "https://registry.npmjs.org/roarr/-/roarr-2.15.4.tgz",
diff --git a/desktop/packages/mullvad-vpn/package.json b/desktop/packages/mullvad-vpn/package.json
index 87d1621af6..c562a9fe2a 100644
--- a/desktop/packages/mullvad-vpn/package.json
+++ b/desktop/packages/mullvad-vpn/package.json
@@ -47,7 +47,7 @@
     "cross-env": "^7.0.3",
     "electron": "42.5.1",
     "electron-builder": "26.15.7",
-    "electron-devtools-installer": "^3.2.0",
+    "electron-devtools-installer": "file:../../vendor/electron-devtools-installer-0.0.0-development.tgz",
     "eslint-plugin-react": "^7.36.1",
     "eslint-plugin-react-compiler": "^19.1.0-rc.2",
     "eslint-plugin-react-hooks": "^5.2.0",
diff --git a/desktop/packages/mullvad-vpn/src/main/user-interface.ts b/desktop/packages/mullvad-vpn/src/main/user-interface.ts
index 8069db1ac0..44f2be0821 100644
--- a/desktop/packages/mullvad-vpn/src/main/user-interface.ts
+++ b/desktop/packages/mullvad-vpn/src/main/user-interface.ts
@@ -458,16 +458,14 @@ export default class UserInterface implements WindowControllerDelegate {
   }
 
   private async installDevTools() {
-    const {
-      default: installer,
-      REACT_DEVELOPER_TOOLS,
-      REDUX_DEVTOOLS,
-    } = await import('electron-devtools-installer');
+    const { installExtension, REACT_DEVELOPER_TOOLS, REDUX_DEVTOOLS } = await import(
+      'electron-devtools-installer'
+    );
     const forceDownload = !!process.env.UPGRADE_EXTENSIONS;
     const options = { forceDownload, loadExtensionOptions: { allowFileAccess: true } };
     try {
-      await installer(REACT_DEVELOPER_TOOLS, options);
-      await installer(REDUX_DEVTOOLS, options);
+      await installExtension(REACT_DEVELOPER_TOOLS, options);
+      await installExtension(REDUX_DEVTOOLS, options);
     } catch (e) {
       const error = e as Error;
       log.info(`Error installing extension: ${error.message}`);
diff --git a/desktop/packages/mullvad-vpn/vite.config.ts b/desktop/packages/mullvad-vpn/vite.config.ts
index d377523279..56e5afcdf2 100644
--- a/desktop/packages/mullvad-vpn/vite.config.ts
+++ b/desktop/packages/mullvad-vpn/vite.config.ts
@@ -102,6 +102,7 @@ const viteConfig = defineConfig({
                 '@grpc/grpc-js',
                 'google-protobuf',
                 'simple-plist',
+                'electron-devtools-installer',
               ],
             },
           },
diff --git a/desktop/vendor/README.md b/desktop/vendor/README.md
new file mode 100644
index 0000000000..5670382ba3
--- /dev/null
+++ b/desktop/vendor/README.md
@@ -0,0 +1,18 @@
+# Vendor npm dependency
+The following instructions are based on this (blogpost)[https://stricker.digital/posts/how-to-vendor-npm-dependencies/].
+
+```bash
+git clone git@github.com/them/example-library.git
+cd example-library
+npm install
+npm run build
+npm pack <build-dir>
+```
+
+Move the `.tgz` file to `desktop/vendor` and install it.
+
+```bash
+cp example-library-1-0-0.tgz desktop/vendor/example-library-1-0-0.tgz
+cd desktop/
+npm install ./vendor/example-library-1-0-0.tgz
+```
diff --git a/desktop/vendor/electron-devtools-installer-0.0.0-development.tgz b/desktop/vendor/electron-devtools-installer-0.0.0-development.tgz
new file mode 100644
index 0000000000..fe29fc55bb
Binary files /dev/null and b/desktop/vendor/electron-devtools-installer-0.0.0-development.tgz differ