diff --git a/signalModuleApp.gradle b/signalModuleApp.gradle
index 440e6d002d..0f34c61f92 100644
--- a/signalModuleApp.gradle
+++ b/signalModuleApp.gradle
@@ -10,7 +10,7 @@ android {
         versionCode 1
         versionName "1.0"
 
-        minSdkVersion 19
+        minSdkVersion 21
         targetSdkVersion TARGET_SDK
         multiDexEnabled true
     }