diff --git a/.github/workflows/c_actions.yml b/.github/workflows/c_actions.yml
index a9547a566f..a9d3449ea4 100644
--- a/.github/workflows/c_actions.yml
+++ b/.github/workflows/c_actions.yml
@@ -24,9 +24,9 @@ jobs:
 
     steps:
     - name: "Prepare: Checkout"
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: "Prepare: Checkout SupportScripts"
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: SpiNNakerManchester/SupportScripts
         path: support
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 79c9d27c2a..7460ffd442 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -29,9 +29,9 @@ jobs:
     timeout-minutes: 5
     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 cf5c808ff6..3977227c63 100644
--- a/.github/workflows/python_actions.yml
+++ b/.github/workflows/python_actions.yml
@@ -30,9 +30,9 @@ 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
@@ -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