diff --git a/pyproject.toml b/pyproject.toml
index 65cf515e..be1a29c2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fgpyo"
-version = "0.6.0"
+version = "0.6.1-dev"
 description = "Python bioinformatics and genomics library"
 authors = ["Nils Homer", "Tim Fennell", "Nathan Roach"]
 license = "MIT"