diff --git a/.github/workflows/test_and_deploy.yml b/.github/workflows/test_and_deploy.yml
index 74bc0498..438fdbbc 100644
--- a/.github/workflows/test_and_deploy.yml
+++ b/.github/workflows/test_and_deploy.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Conda Environment
         uses: conda-incubator/setup-miniconda@v2
@@ -73,7 +73,7 @@ jobs:
     runs-on: ubuntu-latest
     if: contains(github.ref, 'tags')
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with: