diff --git a/README.md b/README.md
index da2df44..57046fd 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ sudo gwbuild -i
 
 AqDiagram consists of 4 parts:
 - data:
-  Library for data manipulation (accumulate, negate, diff, average, floating average)
+  Library for data manipulation (accumulate, negate, diff, average, floating average, sums for days and months)
 - draw:
   Library for drawing text and simple figures (points, lines, rectangles), current implementation for libcairo).
 - placement: