diff --git a/.github/workflows/mocha.yml b/.github/workflows/mocha.yml
index 8cf1ecc454..4625ff6867 100644
--- a/.github/workflows/mocha.yml
+++ b/.github/workflows/mocha.yml
@@ -198,3 +198,29 @@ jobs:
         uses: coverallsapp/github-action@master
         with:
           github-token: '${{ secrets.GITHUB_TOKEN }}'
+  test-browser:
+    # TODO: configure to retain build artifacts in `.karma/` dir
+    name: 'Browser Tests'
+    needs: smoke
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - uses: actions/checkout@v2
+      - name: 'Cache node_modules'
+        uses: actions/cache@v2
+        with:
+          path: '~/.npm'
+          # this key is different than above, since we are running scripts
+          # (builds, postinstall lifecycle hooks, etc.)
+          key: "ubuntu-latest-node-full-v14-${{ hashFiles('**/package-lock.json') }}"
+          restore-keys: |
+            ubuntu-latest-node-full-v14-
+      - name: Install Dependencies
+        run: npm ci
+      - name: Run Browser Tests
+        run: npm start test.browser
+        env:
+          SAUCE_USERNAME: '${{secrets.SAUCE_USERNAME}}'
+          SAUCE_ACCESS_KEY: '${{secrets.SAUCE_ACCESS_KEY}}'
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index e89a15a306..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-###
-### .travis.yml
-###
-
-# these are executed in order.  each must pass for the next to be run
-stages:
-  - test # all tests
-
-# defaults
-language: node_js
-node_js: '12'
-# `nvm install` happens before the cache is restored, which means
-# we must install our own npm elsewhere (`~/npm`)
-before_install: |
-  [[ ! -x ~/npm/node_modules/.bin/npm ]] && {
-    # caching feature creates `~/npm` for us
-    cd ~/npm && npm install npm
-    cd -
-  } || true
-  # avoids bugs around https://github.com/travis-ci/travis-ci/issues/5092
-  export PATH=~/npm/node_modules/.bin:$PATH
-# this avoids compilation in most cases (where we don't need it)
-install: npm ci
-cache:
-  directories:
-    - ~/.npm # cache npm's cache
-    - ~/npm # cache latest npm
-
-jobs:
-  include:
-    - script: npm start test.browser
-      name: 'Browser'
-      node_js: 12
-      addons:
-        artifacts:
-          paths:
-            - .karma/
-            - ./mocha.js
-        chrome: stable
-        sauce_connect: true
-
-env:
-  - 'NODE_OPTIONS="--trace-warnings"'
-
-notifications:
-  email: false
diff --git a/karma.conf.js b/karma.conf.js
index 8379c1bc53..ef150e63a5 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -86,22 +86,13 @@ module.exports = config => {
   // configuration for CI mode
   if (env.CI) {
     console.error('CI mode enabled');
-    if (env.TRAVIS) {
-      console.error('Travis-CI detected');
-      bundleDirPath = path.join(BASE_BUNDLE_DIR_PATH, env.TRAVIS_BUILD_ID);
-      if (env.SAUCE_USERNAME && env.SAUCE_ACCESS_KEY) {
-        // correlate build/tunnel with Travis
-        sauceConfig = {
-          build: `TRAVIS #${env.TRAVIS_BUILD_NUMBER} (${env.TRAVIS_BUILD_ID})`,
-          tunnelIdentifier: env.TRAVIS_JOB_NUMBER,
-          startConnect: false
-        };
-        console.error('Configured SauceLabs');
-      } else {
-        console.error('No SauceLabs credentials present');
-      }
-    } else if (env.APPVEYOR) {
-      throw new Error('no browser tests should run on AppVeyor!');
+    if (env.GITHUB_RUN_ID) {
+      console.error('Github Actions detected');
+      bundleDirPath = path.join(
+        BASE_BUNDLE_DIR_PATH,
+        `github-${env.GITHUB_RUN_ID}_${env.GITHUB_RUN_NUMBER}`
+      );
+      sauceConfig = {};
     } else {
       console.error(`Local environment (${hostname}) detected`);
       // don't need to run sauce from Windows CI b/c travis does it.
@@ -109,12 +100,13 @@ module.exports = config => {
         const id = `${hostname} (${Date.now()})`;
         sauceConfig = {
           build: id,
-          tunnelIdentifier: id,
-          startConnect: true
+          tunnelIdentifier: id
         };
         console.error('Configured SauceLabs');
       } else {
-        console.error('No SauceLabs credentials present');
+        console.error(
+          'No SauceLabs credentials present; set SAUCE_USERNAME and SAUCE_ACCESS_KEY env vars'
+        );
       }
     }
   }
@@ -199,16 +191,7 @@ const addSauceTests = (cfg, sauceLabs) => {
         ...cfg.customLaunchers,
         ...customLaunchers
       },
-      sauceLabs: {
-        ...sauceLabs,
-        public: 'public',
-        connectOptions: {
-          connectRetries: 2,
-          connectRetryTimeout: 30000,
-          detached: sauceLabs.startConnect,
-          tunnelIdentifier: sauceLabs.tunnelIdentifier
-        }
-      },
+      sauceLabs,
       concurrency: Infinity,
       retryLimit: 1,
       captureTimeout: 120000,