diff --git a/.github/workflows/backend-tests.yml b/.github/workflows/backend-tests.yml
index f06e5bf..f216962 100644
--- a/.github/workflows/backend-tests.yml
+++ b/.github/workflows/backend-tests.yml
@@ -31,7 +31,7 @@ jobs:
           - 5432:5432
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
@@ -92,7 +92,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
@@ -121,7 +121,7 @@ jobs:
   security:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0ebbaf..5f0eee4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,7 +47,7 @@ jobs:
         working-directory: backend-server
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
@@ -105,7 +105,7 @@ jobs:
         working-directory: android-client
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Set up Java
         uses: actions/setup-java@v4
diff --git a/.github/workflows/security-maintenance.yml b/.github/workflows/security-maintenance.yml
index cac4967..be361b3 100644
--- a/.github/workflows/security-maintenance.yml
+++ b/.github/workflows/security-maintenance.yml
@@ -13,7 +13,7 @@ jobs:
         working-directory: backend-server
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
@@ -35,7 +35,7 @@ jobs:
         working-directory: android-client
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Set up Java
         uses: actions/setup-java@v4