diff --git a/pyproject.toml b/pyproject.toml
index 2f888f4..a6a5401 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,7 @@ copapy = ["obj/*.o", "py.typed"]
 version_scheme = "post-release"
 local_scheme = "node-and-date"
 tag_regex = "^v(?P<version>\\d+\\.\\d+\\.\\d+(?:-beta)?)$"
+fallback_version = "0.0.0"
 write_to = "src/copapy/_version.py"
 write_to_template = '''
 # generated by setuptools_scm - do not edit