diff --git a/pyproject.toml b/pyproject.toml
index d19d9a94..dbee567a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "langcheck"
-version = "0.8.0"
+version = "0.8.1"
 description = "Simple, Pythonic building blocks to evaluate LLM-based applications"
 readme = "README.md"
 authors = [{ name = "Citadel AI", email = "info@citadel.co.jp" }]
@@ -20,7 +20,7 @@ dependencies = [
     'Jinja2',
     'nlpaug',
     'nltk >= 3.9',
-    'openai >= 1, < 1.47',
+    'openai >= 1',
     'pandas >= 1',
     'plotly >= 5',
     'rouge-score >= 0.1.2',