diff --git a/setup.cfg b/setup.cfg
index d5083f3..9b62bd6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = sgraph
-version = 1.7.1
+version = 1.8.0
 description = sgraph hierarchic graph data structure, format and algorithms
 long_description = file: README.md
 long_description_content_type = text/markdown