diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 527f78090..45a829db0 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@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
         with:
             path: ~/.fhir
diff --git a/.github/workflows/check-pr.yaml b/.github/workflows/check-pr.yaml
index 380c96648..9774224ae 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@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index f41ecd17d..b3fc95252 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@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
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 c6ef03105..6e43000d0 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@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
           distribution: 'temurin'