diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 7632815..4a6757a 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v4
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 8ac0bf0..577056f 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -41,7 +41,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           # Sourcelink embeds the commit; full history isn't required but
           # fetch-depth: 0 makes git describe usable if we want it later.
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 170db19..769046d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -47,7 +47,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1