Bump version to 4.3.1.
diff --git a/gradle.properties b/gradle.properties
index 849e110..5117a9a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
-thisVersion=4.3
+thisVersion=4.3.1
 
 apiCompatVersion=4.2