diff --git a/README.md b/README.md
index 7f049cb..d600e42 100644
--- a/README.md
+++ b/README.md
@@ -308,6 +308,11 @@ The number of pixels the content width can surpass the container width without e
 The number of pixels the content height can surpass the container height without enabling the Y axis scroll bar. Allows some "wiggle room" or "offset break", so that Y axis scroll bar is not enabled just because of a few pixels.  
 **Default: 0**
 
+### stopPropagationOnClick
+When set to false, when clicking on a rail, the click event will be allowed to propagate.
+
+**Default: true**
+
 ## Contribution
 
 #### Please read [Contributing](https://github.com/noraesae/perfect-scrollbar/wiki/Contributing) in the wiki before making any contribution.