diff --git a/HISTORY.txt b/HISTORY.txt
index 6df089cf..e186dccb 100644
--- a/HISTORY.txt
+++ b/HISTORY.txt
@@ -1,3 +1,5 @@
+3.1.3:
+ - Python 3 fix. 
 3.1.2:
  - Python 3 fix. 
 3.1.1: