diff --git a/.github/workflows/android-ci.yml b/.github/workflows/android-ci.yml
index 479d3c90..a283b89a 100644
--- a/.github/workflows/android-ci.yml
+++ b/.github/workflows/android-ci.yml
@@ -33,6 +33,7 @@ jobs:
       fail-fast: false
       matrix:
         api-level:
+          - 21
           - 31
 
     steps:
@@ -89,4 +90,4 @@ jobs:
           ORG_GRADLE_PROJECT_signingKey: ${{ secrets.SIGNING_KEY }}
           ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.SIGNING_PASSWORD }}
           OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-          OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
\ No newline at end of file
+          OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}