diff --git a/HISTORY.md b/HISTORY.md
index 7c3e2ebb9f..a1d1104cd5 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,7 +1,9 @@
 # History
 
-# not yet published, version 9.1.1
+# not yet published, version 9.2.0
 
+- Implemented function `count` to count the total elements in a matrix. 
+  Thanks @Josef37.
 - Fix #2096: cleanup old reference to external dependency `crypto`.