diff --git a/DESCRIPTION b/DESCRIPTION
index 2dbd49ed..7a421919 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,5 +1,5 @@
 Package: gsDesign
-Version: 3.6.3.1
+Version: 3.6.4
 Title: Group Sequential Design
 Authors@R: person(given = "Keaven", family = "Anderson", email =
           "keaven_anderson@merck.com", role = c('aut','cre'))