Index: src/httpcore2/pyproject.toml
--- src/httpcore2/pyproject.toml.orig
+++ src/httpcore2/pyproject.toml
@@ -13,7 +13,7 @@ source = "uv-dynamic-versioning"
 vcs = "git"
 style = "pep440"
 bump = true
-fallback-version = "0.0.0"
+fallback-version = "${MODPY_DISTV}"
 
 [project]
 name = "httpcore2"
