diff --git a/.github/workflows/crystal.yml b/.github/workflows/crystal.yml
index 80e03d6..0728edf 100644
--- a/.github/workflows/crystal.yml
+++ b/.github/workflows/crystal.yml
@@ -14,7 +14,7 @@ jobs:
     container:
       image: crystallang/crystal
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: shards install --ignore-crystal-version
       - name: Check format
@@ -24,7 +24,7 @@ jobs:
     container:
       image: crystallang/crystal
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: shards install --ignore-crystal-version
       - name: Check ameba
@@ -34,7 +34,7 @@ jobs:
     container:
       image: crystallang/crystal
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: shards install --ignore-crystal-version
       - name: Run tests
@@ -44,7 +44,7 @@ jobs:
     container:
       image: crystallang/crystal:nightly
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: shards install --ignore-crystal-version
       - name: Run tests
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 9fad5ef..1a7422b 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -10,7 +10,7 @@ jobs:
     container:
       image: crystallang/crystal
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: shards install --ignore-crystal-version
       - name: Generate documentation