diff --git a/pyproject.toml b/pyproject.toml
index 7603083..4bf6dd3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ coveralls = [
 pytest-cov = "~2.8"
 flake8 = ">=3.6.0"
 mock = "^3.0.5"
-bumpversion = "^0.5.0"
+bumpversion = "^0.6.0"
 sphinx = ">=1.8.4"
 sphinx-rtd-theme = "^0.4.0"