diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 6168100..94950a5 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
       with:
         fetch-depth: 0
 
@@ -41,7 +41,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@5973e2313ac1b9aaedb1f911a1e91228cde07d28 # v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -53,4 +53,4 @@ jobs:
       shell: pwsh
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
\ No newline at end of file
+      uses: github/codeql-action/analyze@5973e2313ac1b9aaedb1f911a1e91228cde07d28 # v2
\ No newline at end of file
diff --git a/.github/workflows/publishDocs.yml b/.github/workflows/publishDocs.yml
index 4c4470e..193c624 100644
--- a/.github/workflows/publishDocs.yml
+++ b/.github/workflows/publishDocs.yml
@@ -15,19 +15,19 @@ jobs:
 
     steps:
     - name: checkout
-      uses: actions/checkout@v3 #https://github.com/actions/checkout
+      uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3 #https://github.com/actions/checkout
       with:
         fetch-depth: 0 # GitVersion is somewhat irritated when fetch-depth is "1"....
         ref: ${{ github.event.ref }}
     
     - name: Cache Tools
-      uses: actions/cache@v3
+      uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c # v3
       with:
         path: tools
         key: ${{ runner.os }}-doc-tools-${{ hashFiles('recipe.cake') }}
 
     - name: Publishing documentation
-      uses: cake-build/cake-action@v1
+      uses: cake-build/cake-action@a6eb054329257c9e70a6c6bf01747ad6e1d9d52b # v1
       with:
         script-path: recipe.cake
         target: Force-Publish-Documentation
diff --git a/.github/workflows/release-notes.yml b/.github/workflows/release-notes.yml
index 7bf2002..6ddb08f 100644
--- a/.github/workflows/release-notes.yml
+++ b/.github/workflows/release-notes.yml
@@ -11,34 +11,34 @@ jobs:
 
     steps:
       - name: Checkout the requested branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
       - name: Fetch all tags and branches
         run: git fetch --prune --unshallow
       - name: Cache Tools
-        uses: actions/cache@v3
+        uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c # v3
         with:
           path: tools
           key: ${{ runner.os }}-tools-${{ hashFiles('recipe.cake') }}
       - name: Set up git version
         if: ${{ !contains(github.ref, '/hotfix/') && !contains(github.ref, '/release/') }}
-        uses: gittools/actions/gitversion/setup@v3.0.0
+        uses: gittools/actions/gitversion/setup@a94a3b62ee018ef5346cb08fd0d63d93811fe691 # v3.0.0
         with:
           versionSpec: "5.x"
       - name: Run git version
         if: ${{ !contains(github.ref, '/hotfix/') && !contains(github.ref, '/release/') }}
         id: gitversion
-        uses: gittools/actions/gitversion/execute@v3.0.0
+        uses: gittools/actions/gitversion/execute@a94a3b62ee018ef5346cb08fd0d63d93811fe691 # v3.0.0
       - name: Create release branch ${{ github.event.inputs.version }}
         if: ${{ steps.gitversion.outputs.majorMinorPatch }}
         run: git switch -c release/${{ steps.gitversion.outputs.majorMinorPatch }}
       - name: Push new branch
         if: ${{ steps.gitversion.outputs.majorMinorPatch }}
-        uses: ad-m/github-push-action@v0.6.0
+        uses: ad-m/github-push-action@40bf560936a8022e68a3c00e7d2abefaf01305a6 # v0.6.0
         with:
           branch: "release/${{ steps.gitversion.outputs.majorMinorPatch }}"
           github_token: ${{ secrets.GH_TOKEN }}
       - name: Drafting Release Notes
-        uses: cake-build/cake-action@v1
+        uses: cake-build/cake-action@a6eb054329257c9e70a6c6bf01747ad6e1d9d52b # v1
         with:
           script-path: recipe.cake
           target: releasenotes