diff --git a/.github/workflows/demo.yml b/.github/workflows/demo.yml
index 3d1ba6c..2c16a31 100644
--- a/.github/workflows/demo.yml
+++ b/.github/workflows/demo.yml
@@ -9,7 +9,7 @@ jobs:
   demo:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.11'
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5f21ffb..d72baed 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
   rufftest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.11'
@@ -21,7 +21,7 @@ jobs:
   typingtest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.11'
@@ -33,7 +33,7 @@ jobs:
   unittest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.11'