diff --git a/setup.py b/setup.py
index 6434230fe..38560111d 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 MINOR = 3
 MICRO = 1
 PRERELEASE = ""
-IS_RELEASED = False
+IS_RELEASED = True
 
 # If this file is part of a Git export (for example created with "git archive",
 # or downloaded from GitHub), ARCHIVE_COMMIT_HASH gives the full hash of the