diff --git a/HISTORY.md b/HISTORY.md
index b08af6106e..fe8a4b48bf 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -59,6 +59,9 @@
   * Fixes to `HoeffdingTree`: ensure that training still works when empty
     constructor is used (#2964).
 
+  * Fix Julia handling of categorical data for `decision_tree()` and
+    `hoeffding_tree()` (#2971).
+
 ### mlpack 3.4.2
 ###### 2020-10-26
   * Added Mean Absolute Percentage Error.