diff --git a/pandarallel/__init__.py b/pandarallel/__init__.py
index 8d6d70b..de3cb7e 100644
--- a/pandarallel/__init__.py
+++ b/pandarallel/__init__.py
@@ -1,3 +1,3 @@
 from .core import pandarallel
 
-__version__ = "1.6.3"
+__version__ = "1.6.4"
diff --git a/setup.cfg b/setup.cfg
index 5ff0d4c..572796b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -8,7 +8,7 @@ author = Manu NALEPA
 author_email = nalepae@gmail.com
 license = BSD
 license_file = LICENSE
-version = 1.6.3
+version = 1.6.4
 
 classifiers =
     License :: OSI Approved :: BSD License