diff --git a/src/poetry/core/packages/vcs_dependency.py b/src/poetry/core/packages/vcs_dependency.py
index b9cbbbaf8..409af4a72 100644
--- a/src/poetry/core/packages/vcs_dependency.py
+++ b/src/poetry/core/packages/vcs_dependency.py
@@ -101,7 +101,7 @@ def pretty_constraint(self) -> str:
 
         return f"{what} {version}"
 
-    def _base_pep_508_name(self, resolved: bool = False) -> str:
+    def _base_pep_508_name(self, *, resolved: bool = False) -> str:
         from poetry.core.vcs import git
 
         requirement = self.pretty_name