diff --git a/setup.cfg b/setup.cfg
index 358d63f..071ebb7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,7 +27,7 @@ classifiers =
 
 [options]
 install_requires =
-	tmtccmd @ git+https://github.com/robamu-org/tmtccmd@4.0.0a1
+	tmtccmd @ git+https://github.com/robamu-org/tmtccmd@v4.0.0a1
 packages = find:
 python_requires = >=3.8
 include_package_data = True