diff --git a/HISTORY.md b/HISTORY.md
index 3976c0d6d3..009e4868a7 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,8 @@
 ### mlpack ?.?.?
 ###### ????-??-??
 
+  * Fix PReLU ann layer (#3420).
+
   * Update outdated code in tutorials (#3398).
 
   * Bugfix for non-square convolution kernels (#3376).