diff --git a/build.gradle b/build.gradle
index 46170971..f74b9253 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,7 +28,7 @@ allprojects {
         jcenter()
     }
     ext {
-        minSdkVersion = 29
+        minSdkVersion = 21
         compileSdkVersion = 29
         targetSdkVersion = 29
         appcompatVersion = '1.1.0'