diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f36973f13607..4acc80bf5a5f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust Toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Build
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust Toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Install CVC5
diff --git a/.github/workflows/explorer.yml b/.github/workflows/explorer.yml
index e8547f348438..e75dbf7e9943 100644
--- a/.github/workflows/explorer.yml
+++ b/.github/workflows/explorer.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust Toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Install Tools