diff --git a/.github/workflows/ips.yml b/.github/workflows/ips.yml
index 268b17454..d96bc9fb6 100644
--- a/.github/workflows/ips.yml
+++ b/.github/workflows/ips.yml
@@ -16,5 +16,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: 'ministryofjustice/moj-ip-addresses'
+          ref: 'main'
         # env:
           # Maybe ass ssh key for ministryofjustice/moj-ip-addresses.