diff --git a/factory/__init__.py b/factory/__init__.py
index caf61563..0624d239 100644
--- a/factory/__init__.py
+++ b/factory/__init__.py
@@ -27,8 +27,9 @@ def make_dbfacade(config: Config) -> DBFacade:
 
 
 def make_github_interface(config: Config) -> GithubInterface:
+    public_key = open(config.github_key).read()
     return GithubInterface(DefaultGithubFactory(config.github_app_id,
-                                                config.github_key),
+                                                public_key),
                            config.github_org_name)