diff --git a/.github/workflows/ci-schedule.yml b/.github/workflows/ci-schedule.yml
index 00885535f..26d0553db 100644
--- a/.github/workflows/ci-schedule.yml
+++ b/.github/workflows/ci-schedule.yml
@@ -10,8 +10,9 @@ jobs:
     if: ${{ github.repository == 'karmada-io/karmada' }}
     runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
-        k8s: [ v1.21.10, v1.22.7, v1.23.4, v1.24.2, v1.25.0, v1.26.0, v1.27.3, v1.28.0 ]
+        k8s: [ v1.23.4, v1.24.2, v1.25.0, v1.26.0, v1.27.3, v1.28.0 ]
     steps:
       # Free up disk space on Ubuntu
       - name: Free Disk Space (Ubuntu)