diff --git a/README.md b/README.md
index fe48f6b3ddb24e1d96925e2cae07adbf01c8fb7c..3702fe33d755da35162307ff1c15b578a0b87d64 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,9 @@ that should be compatible with this version:
   logic for release-acquire memory.
 * [Iris Atomic](https://gitlab.mpi-sws.org/iris/atomic) is an experimental
   formalization of logically atomic triples in Iris.
+* [Iron](https://gitlab.mpi-sws.org/iris/iron) is a linear separation logic
+  build on top of Iris for precise reasoning about resources (such as making
+  sure there are no memory leaks).
 
 ## Further Resources