diff --git a/.github/workflows/monorepo-validate.yaml b/.github/workflows/monorepo-validate.yaml
index f6e52ae2d..f5d904f41 100644
--- a/.github/workflows/monorepo-validate.yaml
+++ b/.github/workflows/monorepo-validate.yaml
@@ -7,10 +7,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        id: cache
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
       - uses: actions/setup-node@v1
         with:
           node-version: '12.x'
       - run: yarn install
+        if: steps.cache.outputs.cache-hit != 'true'
       - run: yarn run compliance:licenses
 
   audit:
@@ -18,10 +24,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        id: cache
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
       - uses: actions/setup-node@v1
         with:
           node-version: '12.x'
       - run: yarn install
+        if: steps.cache.outputs.cache-hit != 'true'
       - run: yarn run compliance:audit
 
   lint:
@@ -29,10 +41,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        id: cache
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
       - uses: actions/setup-node@v1
         with:
           node-version: '12.x'
       - run: yarn install
+        if: steps.cache.outputs.cache-hit != 'true'
       - run: yarn lint
 
   test:
@@ -40,8 +58,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        id: cache
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
       - uses: actions/setup-node@v1
         with:
           node-version: '12.x'
       - run: yarn install
+        if: steps.cache.outputs.cache-hit != 'true'
       - run: yarn test
diff --git a/README.md b/README.md
index ac3e10ded..abc20fb67 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ This top-level repository provides limited common tasks, such as installation
 and commit assistance.  However, most tasks must be executed from within a
 subproject, e.g. running or testing.
 
+
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 **Table of Contents**  *generated with [DocToc](https://github.com/thlorenz/doctoc)*
diff --git a/addons/api/testem.js b/addons/api/testem.js
index 854db8659..dfb911881 100644
--- a/addons/api/testem.js
+++ b/addons/api/testem.js
@@ -3,7 +3,7 @@
 module.exports = {
   test_page: 'tests/index.html?hidepassed',
   disable_watching: true,
-  launch_in_ci: ['Chrome', 'Firefox'],
+  launch_in_ci: ['Chrome'],
   launch_in_dev: ['Chrome', 'Firefox'],
   browser_start_timeout: 120,
   browser_args: {
diff --git a/addons/auth/testem.js b/addons/auth/testem.js
index 854db8659..dfb911881 100644
--- a/addons/auth/testem.js
+++ b/addons/auth/testem.js
@@ -3,7 +3,7 @@
 module.exports = {
   test_page: 'tests/index.html?hidepassed',
   disable_watching: true,
-  launch_in_ci: ['Chrome', 'Firefox'],
+  launch_in_ci: ['Chrome'],
   launch_in_dev: ['Chrome', 'Firefox'],
   browser_start_timeout: 120,
   browser_args: {
diff --git a/addons/rose/testem.js b/addons/rose/testem.js
index 854db8659..dfb911881 100644
--- a/addons/rose/testem.js
+++ b/addons/rose/testem.js
@@ -3,7 +3,7 @@
 module.exports = {
   test_page: 'tests/index.html?hidepassed',
   disable_watching: true,
-  launch_in_ci: ['Chrome', 'Firefox'],
+  launch_in_ci: ['Chrome'],
   launch_in_dev: ['Chrome', 'Firefox'],
   browser_start_timeout: 120,
   browser_args: {
diff --git a/ui/core/testem.js b/ui/core/testem.js
index be5731f94..7381bd84e 100644
--- a/ui/core/testem.js
+++ b/ui/core/testem.js
@@ -1,7 +1,7 @@
 module.exports = {
   test_page: 'tests/index.html?hidepassed',
   disable_watching: true,
-  launch_in_ci: ['Chrome', 'Firefox'],
+  launch_in_ci: ['Chrome'],
   launch_in_dev: ['Chrome', 'Firefox'],
   browser_start_timeout: 120,
   browser_args: {