diff --git a/HISTORY.md b/HISTORY.md
index c2899db049..92ff2f22bf 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,6 @@
-### mlpack 3.1.0
+### mlpack 3.1.1
 ###### ????-??-??
+  * Fix random forest bug for numerical-only data (#1887).
 
 ### mlpack 3.1.0
 ###### 2019-04-25