diff --git a/android/AndroidManifest.xml b/android/AndroidManifest.xml
index b7591c76..87c44c0f 100644
--- a/android/AndroidManifest.xml
+++ b/android/AndroidManifest.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.reecedunn.espeak"
-    android:versionCode="19"
+    android:versionCode="20"
     android:versionName="1.51-dev" >
 
     <uses-feature
diff --git a/android/build.gradle b/android/build.gradle
index ec833f04..d67fd7ee 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -30,7 +30,7 @@ android {
         minSdkVersion 14
         targetSdkVersion 26
         versionCode 20
-        versionName "1.48.15"
+        versionName "1.51-dev"
     }
 
     sourceSets {