diff --git a/README b/README
index 67d76ca..7ef7ed6 100644
--- a/README
+++ b/README
@@ -33,6 +33,7 @@ Core:
   - Fully pipelined, high performance.
   - Configurable commands depth on bankmachines.
   - Auto-Precharge.
+  - Periodic refresh/ZQ short calibration.
 Frontend:
   - Configurable crossbar (simply use crossbar.get_port() to add a new port!)
   - Ports arbitration transparent to the user.