diff --git a/app/build.gradle b/app/build.gradle
index d9cc00a..fb2e091 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "me.datenknoten.tueroeffner"
-        minSdkVersion 19
+        minSdkVersion 21
         targetSdkVersion 21
         versionCode 1
         versionName "1.0"