diff --git a/.github/workflows/build-dockers.yml b/.github/workflows/build-dockers.yml
index b2aa109..45392ad 100644
--- a/.github/workflows/build-dockers.yml
+++ b/.github/workflows/build-dockers.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           ref: ${{ github.head_ref }}
@@ -62,7 +62,7 @@ jobs:
             label: org.opencontainers.image.title=labca-control
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.head_ref }}
 
diff --git a/.github/workflows/build-standalone.yml b/.github/workflows/build-standalone.yml
index 85f978e..70e4a63 100644
--- a/.github/workflows/build-standalone.yml
+++ b/.github/workflows/build-standalone.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
           fetch-depth: 0
diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index a8e081e..4d0d290 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -23,7 +23,7 @@ jobs:
           - 1.24.4
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions/setup-go@v5
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 227cab6..10ddb55 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
           fetch-depth: 0
diff --git a/.github/workflows/try-bump.yml b/.github/workflows/try-bump.yml
index ba13afd..18228c6 100644
--- a/.github/workflows/try-bump.yml
+++ b/.github/workflows/try-bump.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout Self
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - uses: oprypin/find-latest-tag@v1
         with:
@@ -22,7 +22,7 @@ jobs:
 
       - run: echo "Boulder is at version ${{ steps.boulder.outputs.tag }}"
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           repository: letsencrypt/boulder
           ref: ${{ steps.boulder.outputs.tag }}