diff --git a/DotsLoadingView/build.gradle b/DotsLoadingView/build.gradle
index 8f46049..aa6dddc 100644
--- a/DotsLoadingView/build.gradle
+++ b/DotsLoadingView/build.gradle
@@ -9,7 +9,7 @@ android {
     compileSdk 33
 
     defaultConfig {
-        minSdk 22
+        minSdk 21
         targetSdk 33
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
diff --git a/app/build.gradle b/app/build.gradle
index 8c883fe..7564fc8 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId "com.barryzeha.dotsloading"
-        minSdk 22
+        minSdk 21
         targetSdk 33
         versionCode 1
         versionName "1.0"