diff --git a/CHANGELOG b/CHANGELOG
index 68d4836b8..018a877e4 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,6 +4,7 @@
 - do not show chart by category if there are no categories
 - documents in certain folders can be excluded from dashboard, could be useful
   for folders containing archived documents
+- migrate from Slim 3 to Slim 4 (check for extension updates)
 
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                      Changes in version 5.1.36