diff --git a/tracetools_analysis/CHANGELOG.rst b/tracetools_analysis/CHANGELOG.rst
index 90c156e..3dc9d9b 100644
--- a/tracetools_analysis/CHANGELOG.rst
+++ b/tracetools_analysis/CHANGELOG.rst
@@ -2,6 +2,11 @@
 Changelog for package tracetools_analysis
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+Forthcoming
+-----------
+* Improve performance by using lists of dicts as intermediate storage & converting to dataframes at the end
+* Contributors: Christophe Bedard
+
 1.0.0 (2020-06-02)
 ------------------
 * Add sphinx documentation for tracetools_analysis