diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 7c2c230d..fa9efab2 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Check out VERDICT source
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
 
     - name: Set up GraphViz
       uses: ts-graphviz/setup-graphviz@v1
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fc5ee9e7..84888619 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
     - name: Check out VERDICT source
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
 
     - name: Set up OCaml
       uses: ocaml/setup-ocaml@v2.0.8
@@ -100,7 +100,7 @@ jobs:
 
     - name: Check out VERDICT-update-sites
       if: runner.os == 'Linux'
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
       with:
         repository: ge-high-assurance/VERDICT-update-sites
         token: ${{ secrets.CI_PAT }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 91497b6f..705d6583 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,11 +23,11 @@ jobs:
 
     steps:
     - name: Check out VERDICT source
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
 
     - name: Check out kind2 source
       if: runner.os == 'macOS'
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
       with:
         repository: kind2-mc/kind2
         path: tools/verdict-back-ends/kind2
@@ -93,7 +93,7 @@ jobs:
 
     steps:
     - name: Check out VERDICT source
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
 
     - name: Set up GraphViz
       uses: ts-graphviz/setup-graphviz@v1
@@ -165,7 +165,7 @@ jobs:
           gehighassurance/verdict:${{ github.event.release.tag_name }}
 
     - name: Check out VERDICT-update-sites
-      uses: actions/checkout@v3.2.0
+      uses: actions/checkout@v3.4.0
       with:
         repository: ge-high-assurance/VERDICT-update-sites
         token: ${{ secrets.CI_PAT }}