diff --git a/library/build.gradle b/library/build.gradle
index 216e119..0304fcc 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -7,7 +7,7 @@ android {
     buildToolsVersion "30.0.2"
 
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion 19
         targetSdkVersion 30
         versionCode 1
         versionName "1.0"