diff --git a/pyproject.toml b/pyproject.toml
index 103089d..b3c0d81 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "sparse-ir"
-version = "2.1.0"
+version = "2.1.1"
 description = "Python bindings for the libsparseir library, providing efficient sparse intermediate representation for many-body physics calculations"
 readme = "README.md"
 requires-python = ">=3.10"