diff --git a/.github/workflows/test-changed.yml b/.github/workflows/test-changed.yml
index 6f86e38e7ed..7455435147b 100644
--- a/.github/workflows/test-changed.yml
+++ b/.github/workflows/test-changed.yml
@@ -3,31 +3,61 @@ name: Test Modified Packages
 on: pull_request
 
 jobs:
-  test:
-    name: Test Packages With Changed Files
+  test-chrome:
+    name: Test Packages With Changed Files in Chrome and Node
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout Repo
-      uses: actions/checkout@master
-      with:
-        # This makes Actions fetch all Git history so run-changed script can diff properly.
-        fetch-depth: 0
-    - name: Set up Node (14)
-      uses: actions/setup-node@v2
-      with:
-        node-version: 14.x
-    - name: install Chrome stable
-      run: |
-        sudo apt-get update
-        sudo apt-get install google-chrome-stable
-    - name: Bump Node memory limit
-      run: echo "NODE_OPTIONS=--max_old_space_size=4096" >> $GITHUB_ENV
-    - name: Test setup and yarn install
-      run: |
-        cp config/ci.config.json config/project.json
-        yarn
-    - name: build
-      run: yarn build:changed core
-    - name: Run tests on changed packages
-      run: xvfb-run yarn test:changed core
\ No newline at end of file
+      - name: Checkout Repo
+        uses: actions/checkout@master
+        with:
+          # This makes Actions fetch all Git history so run-changed script can diff properly.
+          fetch-depth: 0
+      - name: Set up Node (14)
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+      - name: install Chrome stable
+        run: |
+          sudo apt-get update
+          sudo apt-get install google-chrome-stable
+      - name: Bump Node memory limit
+        run: echo "NODE_OPTIONS=--max_old_space_size=4096" >> $GITHUB_ENV
+      - name: Test setup and yarn install
+        run: |
+          cp config/ci.config.json config/project.json
+          yarn
+      - name: build
+        run: yarn build:changed core
+      - name: Run tests on changed packages
+        run: xvfb-run yarn test:changed core
+
+  test-firefox:
+    name: Test Packages With Changed Files in Firefox
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@master
+        with:
+          fetch-depth: 0
+      - name: Set up Node (14)
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+      - name: install Firefox stable
+        run: |
+          sudo apt-get update
+          sudo apt-get install firefox
+      - name: Bump Node memory limit
+        run: echo "NODE_OPTIONS=--max_old_space_size=4096" >> $GITHUB_ENV
+      - name: Test setup and yarn install
+        run: |
+          cp config/ci.config.json config/project.json
+          yarn
+      - name: build
+        run: yarn build:changed core
+      - name: Run tests on changed packages
+        run: xvfb-run yarn test:changed core
+        env:
+          BROWSERS: 'Firefox'
diff --git a/config/karma.base.js b/config/karma.base.js
index 83a1031c010..593de711579 100644
--- a/config/karma.base.js
+++ b/config/karma.base.js
@@ -60,7 +60,7 @@ const config = {
   // start these browsers
   // available browser launchers:
   // https://npmjs.org/browse/keyword/karma-launcher
-  browsers: ['ChromeHeadless'],
+  browsers: process.env?.BROWSERS?.split(',') ?? ['ChromeHeadless'],
 
   webpack: webpackTestConfig,
 
diff --git a/packages/storage/karma.conf.js b/packages/storage/karma.conf.js
index cae7c2a48e9..c6d44ef1693 100644
--- a/packages/storage/karma.conf.js
+++ b/packages/storage/karma.conf.js
@@ -34,7 +34,7 @@ function getTestFiles(argv) {
   let unitTestFiles = ['test/unit/*'];
   let integrationTestFiles = ['test/integration/*', 'test/browser/*'];
 
-  if (argv.unit) {
+  if (argv.unit || process.env?.BROWSERS) {
     return unitTestFiles;
   } else if (argv.integration) {
     return integrationTestFiles;