diff --git a/.old-bumpversion.cfg b/.old-bumpversion.cfg
deleted file mode 100644
index d44ac71..0000000
--- a/.old-bumpversion.cfg
+++ /dev/null
@@ -1,12 +0,0 @@
-[bumpversion]
-current_version = 0.3.0
-commit = True
-tag = True
-
-[bumpversion:file:pyproject.toml]
-search = version = "{current_version}"
-replace = version = "{new_version}"
-
-[bumpversion:file:networkframe/__init__.py]
-search = __version__ = "{current_version}"
-replace = __version__ = "{new_version}"
diff --git a/pyproject.toml b/pyproject.toml
index 53e332e..50093ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,8 +51,8 @@ tox-current-env = "^0.0.11"
 twine = "^4.0.2"
 
 [build-system]
-build-backend = "poetry.masonry.api"
-requires = ["poetry"]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
 
 [tool.ruff]
 ignore-init-module-imports = true