diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index d5646fb49..a4d99aa7b 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -41,9 +41,19 @@ jobs:
 
     name: ${{ matrix.name }}
     runs-on: ${{ matrix.os }}
+    env:
+      PUPPETEER_DOWNLOAD_PATH: ~/.puppeteer_download
     steps:
       - uses: actions/checkout@v2
 
+      - uses: actions/cache@v2
+        if: ${{ runner.os != 'Windows' }}
+        with:
+          path: |
+            ~/.npm
+            ~/.puppeteer_download
+          key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+
       - name: Use Node.js ${{ matrix.node }}
         uses: actions/setup-node@v2
         with:
@@ -57,9 +67,17 @@ jobs:
   sm-test:
     name: SpiderMonkey
     runs-on: ubuntu-20.04
+    env:
+      PUPPETEER_DOWNLOAD_PATH: ~/.puppeteer_download
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js 10.x
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.npm
+            ~/.puppeteer_download
+          key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+      - name: Use Node.js 10
         uses: actions/setup-node@v2
         with:
           node-version: 10.x
diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
index c016e0ece..21230f120 100644
--- a/.github/workflows/coverage.yaml
+++ b/.github/workflows/coverage.yaml
@@ -6,10 +6,19 @@ jobs:
   run:
     name: Code coverage
     runs-on: ubuntu-20.04
+    env:
+      PUPPETEER_DOWNLOAD_PATH: ~/.puppeteer_download
     steps:
       - uses: actions/checkout@v2
 
-      - name: Use Node.js 10.x
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.npm
+            ~/.puppeteer_download
+          key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Use Node.js 10
         uses: actions/setup-node@v2
         with:
           node-version: 10.x