diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index a55acf2..2323912 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -55,7 +55,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v6
+      uses: actions/checkout@v6.0.1
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index e3c2b3e..f56c346 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.1
     - name: Set up Elixir
       uses: erlef/setup-beam@e6d7c94229049569db56a7ad5a540c051a010af9 # v1.20.4
       with:
diff --git a/.github/workflows/generator-generic-ossf-slsa3-publish.yml b/.github/workflows/generator-generic-ossf-slsa3-publish.yml
index bfb56b7..58a15d1 100644
--- a/.github/workflows/generator-generic-ossf-slsa3-publish.yml
+++ b/.github/workflows/generator-generic-ossf-slsa3-publish.yml
@@ -23,7 +23,7 @@ jobs:
       digests: ${{ steps.hash.outputs.digests }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
 
       # ========================================================
       #
diff --git a/.github/workflows/guix-nix-policy.yml b/.github/workflows/guix-nix-policy.yml
index 6771253..b2d87cb 100644
--- a/.github/workflows/guix-nix-policy.yml
+++ b/.github/workflows/guix-nix-policy.yml
@@ -4,7 +4,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Enforce Guix primary / Nix fallback
         run: |
           # Check for package manager files
diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index dcf8425..ccb6e96 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
@@ -49,7 +49,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/npm-bun-blocker.yml b/.github/workflows/npm-bun-blocker.yml
index d4f73fc..1f8fe05 100644
--- a/.github/workflows/npm-bun-blocker.yml
+++ b/.github/workflows/npm-bun-blocker.yml
@@ -4,7 +4,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Block npm/bun
         run: |
           if [ -f "package-lock.json" ] || [ -f "bun.lockb" ] || [ -f ".npmrc" ]; then
diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index c1a7b7a..56d5585 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -5,7 +5,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       
       - name: Check file permissions
         run: |
@@ -35,7 +35,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Check documentation
         run: |
           MISSING=""
diff --git a/.github/workflows/rsr-antipattern.yml b/.github/workflows/rsr-antipattern.yml
index e6ce6a0..964c51c 100644
--- a/.github/workflows/rsr-antipattern.yml
+++ b/.github/workflows/rsr-antipattern.yml
@@ -16,7 +16,7 @@ jobs:
   antipattern-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
 
       - name: Check for TypeScript
         run: |
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index c1071e6..b9a7175 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -14,7 +14,7 @@ jobs:
       security-events: write
       id-token: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
         with:
           persist-credentials: false
       
diff --git a/.github/workflows/security-policy.yml b/.github/workflows/security-policy.yml
index a9d7c0f..ed1b4f9 100644
--- a/.github/workflows/security-policy.yml
+++ b/.github/workflows/security-policy.yml
@@ -4,7 +4,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Security checks
         run: |
           FAILED=false
diff --git a/.github/workflows/wellknown-enforcement.yml b/.github/workflows/wellknown-enforcement.yml
index 2108364..af2216d 100644
--- a/.github/workflows/wellknown-enforcement.yml
+++ b/.github/workflows/wellknown-enforcement.yml
@@ -17,7 +17,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       
       - name: RFC 9116 security.txt validation
         run: |