diff --git a/lib/public_activity/version.rb b/lib/public_activity/version.rb
index 3097c697..2a7e253f 100644
--- a/lib/public_activity/version.rb
+++ b/lib/public_activity/version.rb
@@ -2,5 +2,5 @@
 
 module PublicActivity
   # A constant with gem's version
-  VERSION = '1.6.3'
+  VERSION = '1.6.4'
 end