diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index fb15601..7d3a14f 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -36,18 +36,18 @@ jobs:
         run: exit 0 # Skip unnecessary test runs for dependabot and merge queues. Artifically flag as successful, as this is a required check for branch protection.
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6
         with:
           languages: ${{ matrix.language }}
           queries: +security-and-quality
 
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v2
+        uses: github/codeql-action/autobuild@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v2
+        uses: github/codeql-action/analyze@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6
         with:
           category: "/language:${{ matrix.language }}"
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index ef49f37..24c8a66 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -18,7 +18,7 @@ jobs:
     environment: release
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           fetch-depth: 0
           ref: ${{ github.event.inputs.branch }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 402f78f..effc12d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - uses: ./.github/actions/setup