diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 73069ba..76a33f9 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
     - name: Build the container
       run: docker build -f test/Dockerfile . -t sitespeedio/throttle
     - name: Test Throttle
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 9f0e4e9..6c811f1 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -13,9 +13,9 @@ jobs:
       matrix:
         node-version: [20.x, 22.x, 24.x]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
       with:
         node-version: ${{ matrix.node-version }}
     - name: Install throttle
diff --git a/.github/workflows/osx.yml b/.github/workflows/osx.yml
index 64eb041..5a4c55a 100644
--- a/.github/workflows/osx.yml
+++ b/.github/workflows/osx.yml
@@ -10,9 +10,9 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
     - name: Use Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
       with:
         node-version: '20.x'
     - name: Install dependencies