diff --git a/.github/workflows/Build.yaml b/.github/workflows/Build.yaml
index 6bee0ddfb..7bbb75e07 100644
--- a/.github/workflows/Build.yaml
+++ b/.github/workflows/Build.yaml
@@ -153,7 +153,7 @@ jobs:
     timeout-minutes: 55
     strategy:
       matrix:
-        api-level: [26, 30]
+        api-level: [21, 26, 30]
 
     steps:
       - name: Delete unnecessary tools 🔧