diff --git a/packages/npsim/package.py b/packages/npsim/package.py
index e2f7926b..00e5dcfa 100644
--- a/packages/npsim/package.py
+++ b/packages/npsim/package.py
@@ -17,6 +17,10 @@ class Npsim(CMakePackage):
     maintainers = ["wdconinc"]
 
     version("main", branch="main")
+    version(
+        "1.1.1",
+        sha256="d1a34efd22832f0da863e5712d342153ca63520acccf9516b47ff3cb2ed4e935",
+    )
     version(
         "1.1.0",
         sha256="0ca9a88560eae22ecce3ffee4cdb38ee21bea8fa7330fded8f896b93679bf5a3",