diff --git a/HISTORY.md b/HISTORY.md
index 6e377b9d72..ec1fdf766f 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,7 @@
 ### mlpack ?.?.?
 ###### ????-??-??
+  * Reinforcement Learning: Deep Deterministic Policy Gradient (#3494).
+  
   * Adapt C_ReLU, ReLU6, FlexibleReLU layer for new neural network API (#3445).
 
   * Fix PReLU, add integration test to it (#3473).