diff --git a/.conda/meta.yaml b/.conda/meta.yaml
index 385895d..93ae89d 100644
--- a/.conda/meta.yaml
+++ b/.conda/meta.yaml
@@ -21,12 +21,12 @@ requirements:
     - scipy
     - setuptools
     - wheel
-    - spm-lab::pylibsparseir >=0.8.0,<0.9.0
+    - spm-lab::pylibsparseir >=0.8.3,<0.9.0
   run:
     - numpy
     - python
     - scipy
-    - spm-lab::pylibsparseir >=0.8.0,<0.9.0
+    - spm-lab::pylibsparseir >=0.8.3,<0.9.0
 
 #test:
 #  imports:
diff --git a/pyproject.toml b/pyproject.toml
index b3c0d81..5cb86ec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,13 +1,13 @@
 [project]
 name = "sparse-ir"
-version = "2.1.1"
+version = "2.1.2"
 description = "Python bindings for the libsparseir library, providing efficient sparse intermediate representation for many-body physics calculations"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
     "numpy",
     "scipy",
-    "pylibsparseir>=0.8.0,<0.9.0",
+    "pylibsparseir>=0.8.3,<0.9.0",
 ]
 authors = [
     {name = "SpM-lab"}