diff --git a/.github/workflows/CDA-testing.yml b/.github/workflows/CDA-testing.yml
index eeca383..02f0b06 100644
--- a/.github/workflows/CDA-testing.yml
+++ b/.github/workflows/CDA-testing.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: set up backend
         run: docker compose up -d
diff --git a/.github/workflows/code-check.yml b/.github/workflows/code-check.yml
index c9eb4b5..d4db3fb 100644
--- a/.github/workflows/code-check.yml
+++ b/.github/workflows/code-check.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       # Verify that python files are formatted using black and isort. Both of the actions
       # below simply check the source code and fail if they find any files that need to be
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 0af34a3..efdd17d 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/pypi-deploy.yml b/.github/workflows/pypi-deploy.yml
index 3d34e19..d50bbfa 100644
--- a/.github/workflows/pypi-deploy.yml
+++ b/.github/workflows/pypi-deploy.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set Up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/test-deploy.yml b/.github/workflows/test-deploy.yml
index d5cbe39..5c49fe9 100644
--- a/.github/workflows/test-deploy.yml
+++ b/.github/workflows/test-deploy.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set Up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 4bb2c3f..691c00d 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set Up Python
         uses: actions/setup-python@v5