diff --git a/.github/workflows/bleeding-edge.yml b/.github/workflows/bleeding-edge.yml
index 7101e33c..231eda36 100644
--- a/.github/workflows/bleeding-edge.yml
+++ b/.github/workflows/bleeding-edge.yml
@@ -24,7 +24,7 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup Python
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 47dd8965..498ad384 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup Python
       uses: actions/setup-python@v4
       with:
@@ -60,7 +60,7 @@ jobs:
     name: type-checking
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup Python
       uses: actions/setup-python@v4
       with:
@@ -85,7 +85,7 @@ jobs:
       with:
         python-version: '3.11'
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Build
       run: |