diff --git a/setup.cfg b/setup.cfg
index c6dd5e2..cf4cee4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = nanoribbons
-version = 2.0.0b3
+version = 2.0.0b4
 description = Tools for graphene nanoribbons, developed at the nanotech@surfaces laboratory, Empa
 long_description = file: README.md
 long_description_content_type = text/markdown
@@ -45,7 +45,7 @@ ignore =
     E203
 
 [bumpver]
-current_version = "v2.0.0b3"
+current_version = "v2.0.0b4"
 version_pattern = "vMAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "Bump version: {old_version} → {new_version}"
 commit = True