diff --git a/pyproject.toml b/pyproject.toml
index 499515a..48a8545 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ Issues = "https://github.com/connectrpc/connect-python/issues"
 
 [tool.hatch.version]
 source = "vcs"
-raw-options = { local_scheme = "no-local-version" }
+raw-options = { local_scheme = "no-local-version", fallback_version = "0.0.0" }
 
 [tool.hatch.build.targets.wheel]
 packages = ["src/connectrpc"]