diff --git a/.github/workflows/pr-test-amd.yml b/.github/workflows/pr-test-amd.yml
index a8f65e00b..255d70019 100644
--- a/.github/workflows/pr-test-amd.yml
+++ b/.github/workflows/pr-test-amd.yml
@@ -970,7 +970,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        part: [0, 1, 2]
+        part: [0, 1, 2, 3]
     runs-on: ${{ format('linux-{0}-8gpu-sglang', inputs.runner_arch || 'mi325') }}
     steps:
       - name: Checkout code