diff --git a/README.md b/README.md
index 24f86fe..a5f85cf 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
-This is a build variant where PostgreSQL database includes `count_bits`. There are no other differences with `static-dockerhub` setup.
+This is a build variant with PostgreSQL including [count_bits](https://github.com/sldab/count-bits). 
+
+There are no other differences with `static-dockerhub` setup.
 
 Look here for more information: https://git.tt-rss.org/fox/ttrss-docker-compose/src/static-dockerhub/README.md
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