diff --git a/CHANGES.md b/CHANGES.md
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@@ -1,6 +1,7 @@
 ## 1.1.4-SNAPSHOT
 
 * Add arglist metadata to navs (thanks phronmophobic)
+* Improve before-index performance by 150x on lists and 5x on vectors (thanks @jeff303)
 
 ## 1.1.3 - 2019-10-13