diff --git a/pkgs/development/python-modules/breezy/default.nix b/pkgs/development/python-modules/breezy/default.nix
index 5fb4dd913e60..c7e938465507 100644
--- a/pkgs/development/python-modules/breezy/default.nix
+++ b/pkgs/development/python-modules/breezy/default.nix
@@ -8,6 +8,7 @@
 , dulwich
 , fastbencode
 , fastimport
+, pygithub
 , libiconv
 , merge3
 , patiencediff
@@ -66,7 +67,8 @@ buildPythonPackage rec {
     pyyaml
     urllib3
   ] ++ passthru.optional-dependencies.launchpad
-    ++ passthru.optional-dependencies.fastimport;
+    ++ passthru.optional-dependencies.fastimport
+    ++ passthru.optional-dependencies.github;
 
   nativeCheckInputs = [
     testtools
@@ -109,6 +111,9 @@ buildPythonPackage rec {
       fastimport = [
         fastimport
       ];
+      github = [
+        pygithub
+      ];
     };
   };