diff --git a/pkgs/by-name/co/cobang/package.nix b/pkgs/by-name/co/cobang/package.nix
index 226166c7f4da..a359d7546564 100644
--- a/pkgs/by-name/co/cobang/package.nix
+++ b/pkgs/by-name/co/cobang/package.nix
@@ -59,6 +59,7 @@ python3Packages.buildPythonApplication (finalAttrs: {
     pygobject3
     python-zbar
     qrcode
+    typing-extensions
   ];
 
   # Wrapping this manually for SVG recognition