diff --git a/v4/app/build.gradle b/v4/app/build.gradle
index 02c44558..dd17e6ab 100644
--- a/v4/app/build.gradle
+++ b/v4/app/build.gradle
@@ -19,7 +19,7 @@ android {
         minSdkVersion parent.minSdkVersion
         targetSdkVersion parent.targetSdkVersion
         versionCode 10000
-        versionName "1.7.1"
+        versionName "1.8.1"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"