diff --git a/pygis/__init__.py b/pygis/__init__.py
index 01be24b..5ca3ae5 100644
--- a/pygis/__init__.py
+++ b/pygis/__init__.py
@@ -2,4 +2,4 @@
 
 __author__ = """Qiusheng Wu"""
 __email__ = "giswqs@gmail.com"
-__version__ = "0.6.3"
+__version__ = "0.6.4"
diff --git a/pyproject.toml b/pyproject.toml
index ac00b77..58ca444 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pygis"
-version = "0.6.3"
+version = "0.6.4"
 dynamic = [
     "dependencies",
 ]
@@ -39,7 +39,7 @@ dependencies = {file = ["requirements.txt"]}
 universal = true
 
 [tool.bumpversion]
-current_version = "0.6.3"
+current_version = "0.6.4"
 commit = true
 tag = true