diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index 7e99ac4..e5bb2cd 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -12,7 +12,7 @@ jobs:
         with:
           node-version: '12.x'
       - name: Cache NPM dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: node_modules
           key: ${{ runner.os }}-npm-cache
diff --git a/.github/workflows/tester.yml b/.github/workflows/tester.yml
index 951b677..da6c812 100644
--- a/.github/workflows/tester.yml
+++ b/.github/workflows/tester.yml
@@ -17,7 +17,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - name: Cache NPM dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: node_modules
           key: ${{ runner.os }}-npm-cache
@@ -41,7 +41,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - name: Cache NPM dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: node_modules
           key: ${{ runner.os }}-npm-cache