diff --git a/.github/workflows/c_actions.yml b/.github/workflows/c_actions.yml
index de7a0001..e372fdbd 100644
--- a/.github/workflows/c_actions.yml
+++ b/.github/workflows/c_actions.yml
@@ -20,9 +20,9 @@ jobs:
     timeout-minutes: 15
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Checkout SupportScripts
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: SpiNNakerManchester/SupportScripts
         path: support
diff --git a/.github/workflows/python_actions.yml b/.github/workflows/python_actions.yml
index e4bd98ee..3e46f91d 100644
--- a/.github/workflows/python_actions.yml
+++ b/.github/workflows/python_actions.yml
@@ -29,9 +29,9 @@ jobs:
       BASE_PKG: spinnaker_graph_front_end
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Checkout SupportScripts
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: SpiNNakerManchester/SupportScripts
         path: support
@@ -83,9 +83,9 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Checkout SupportScripts
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: SpiNNakerManchester/SupportScripts
         path: support