diff --git a/README.md b/README.md
index a458367..17a83e3 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Hashing float vectors in N-dimensions
 
-This is a working beta version.
+This is a working beta version, but now there is an issue https://github.com/vitali-fedulov/hyper/issues/1
 
 Algorithm description:
 https://www.similar.pictures/algorithm-for-hashing-high-dimensional-float-vectors.html