diff --git a/README.md b/README.md
index 66ba6934c3b..c3d860732d9 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,7 @@ develop quantum programs for a variety of applications.
 
 [Qualtran]: https://github.com/quantumlib/qualtran
 [qsim]: https://github.com/quantumlib/qsim
-[Stim]: https://github.com/quantumlib/ssim
+[Stim]: https://github.com/quantumlib/stim
 [OpenFermion]: https://github.com/quantumlib/openfermion
 [OpenFermion-FQE]: https://github.com/quantumlib/OpenFermion-FQE
 [OpenFermion-PySCF]: https://github.com/quantumlib/OpenFermion-PySCF