diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3c30c589d..c08b97682 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
   gradle:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
             path: ~/.fhir
diff --git a/.github/workflows/check-pr.yaml b/.github/workflows/check-pr.yaml
index 4da27cd84..829a82530 100644
--- a/.github/workflows/check-pr.yaml
+++ b/.github/workflows/check-pr.yaml
@@ -17,7 +17,7 @@ jobs:
           os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
             fetch-depth: 0 #shallow clone for better sonarqube analysis
       - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index e54fec3de..5e2aad2b7 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -18,7 +18,7 @@ jobs:
       contents: read
     steps:
     - name: Checkout repository
-      uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
     - name: Setup Java
       uses: actions/setup-java@c1e323688fd81a25caa38c78aa6df2d33d3e20d9 # v4
diff --git a/.github/workflows/compile_against_cdr-cr.yml b/.github/workflows/compile_against_cdr-cr.yml
index 9fd3019be..852d9944d 100644
--- a/.github/workflows/compile_against_cdr-cr.yml
+++ b/.github/workflows/compile_against_cdr-cr.yml
@@ -14,7 +14,7 @@ jobs:
   compile-against-cdr-cr:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       name: Checkout
     - name: Install poetry
       run: pipx install poetry
diff --git a/.github/workflows/spotless.yml b/.github/workflows/spotless.yml
index a029582ab..b72eab03e 100644
--- a/.github/workflows/spotless.yml
+++ b/.github/workflows/spotless.yml
@@ -10,7 +10,7 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-java@c1e323688fd81a25caa38c78aa6df2d33d3e20d9 # v4
         with:
           distribution: 'temurin'