diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 0bfc184f1e..1c84859b53 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         env:
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 79137689bb..5fed6fe068 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3 # needed for GitHub Actions Cache in build-push-action
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 8c9834fdd1..16342ecd92 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check for undocumented modules
         run: python scripts/goblint-lib-modules.py
diff --git a/.github/workflows/indentation.yml b/.github/workflows/indentation.yml
index 81d8d42d65..4b245641fd 100644
--- a/.github/workflows/indentation.yml
+++ b/.github/workflows/indentation.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/locked.yml b/.github/workflows/locked.yml
index 952c272667..5cd517cccc 100644
--- a/.github/workflows/locked.yml
+++ b/.github/workflows/locked.yml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         env:
@@ -82,7 +82,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         env:
diff --git a/.github/workflows/metadata.yml b/.github/workflows/metadata.yml
index b7ea3c2dea..5a4d99e68a 100644
--- a/.github/workflows/metadata.yml
+++ b/.github/workflows/metadata.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Validate CITATION.cff
         uses: docker://citationcff/cffconvert:latest
@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v6
diff --git a/.github/workflows/options.yml b/.github/workflows/options.yml
index ce2190d14a..b1009b03b3 100644
--- a/.github/workflows/options.yml
+++ b/.github/workflows/options.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v6
diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
index fee7d12871..5e98377dd7 100644
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run semgrep
         run: semgrep scan --config .semgrep/ --sarif > semgrep.sarif
diff --git a/.github/workflows/unlocked.yml b/.github/workflows/unlocked.yml
index ce6e42f255..37fa38640f 100644
--- a/.github/workflows/unlocked.yml
+++ b/.github/workflows/unlocked.yml
@@ -44,7 +44,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         uses: ocaml/setup-ocaml@v3
@@ -97,7 +97,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         uses: ocaml/setup-ocaml@v3
@@ -147,7 +147,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         uses: ocaml/setup-ocaml@v3
@@ -216,7 +216,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up OCaml ${{ matrix.ocaml-compiler }}
         uses: ocaml/setup-ocaml@v3