diff --git a/TODO.md b/TODO.md
index 80b8abdcd9..5f2c504af8 100644
--- a/TODO.md
+++ b/TODO.md
@@ -17,7 +17,6 @@ C
 * [xpmem](https://github.com/hjelmn/xpmem)
 * [sandia openshmem](https://github.com/Sandia-OpenSHMEM/SOS)
 * [ummunotify](https://github.com/Portals4/ummunotify)
-* [portals4](https://github.com/Portals4/portals4)
 
 C++
 * [machinekit](https://github.com/machinekit/machinekit)