diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index 1e45213d..54035033 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -28,7 +28,7 @@ jobs:
       OE_LICENSE: ${{ github.workspace }}/oe_license.txt
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install with OpenEye Toolkits
         if: ${{ matrix.openeye == true }}
diff --git a/.github/workflows/installer.yml b/.github/workflows/installer.yml
index a47af2ae..01f9af33 100644
--- a/.github/workflows/installer.yml
+++ b/.github/workflows/installer.yml
@@ -25,7 +25,7 @@ jobs:
       PYVER: ${{ matrix.python-version }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install conda environment
       uses: mamba-org/setup-micromamba@v1