diff --git a/services.py b/services.py
index 35573bb..36c2ff1 100644
--- a/services.py
+++ b/services.py
@@ -32,9 +32,9 @@ class InitReleaseService():
 
 class PrepareReleaseService():
 
-    def __init__(self):
-        self.version_repo
-        pass
+    def __init__(self, version_repo: VersionRepository):
+        self.version_repo = version_repo
+        
 
     def run_tests(self): # maybe auto?
         pass