diff --git a/pandarallel/__init__.py b/pandarallel/__init__.py
index 4307c2d..7c43c78 100644
--- a/pandarallel/__init__.py
+++ b/pandarallel/__init__.py
@@ -1,3 +1,3 @@
-__version__ = "1.3.3"
+__version__ = "1.3.4"
 
 from .pandarallel import pandarallel
diff --git a/setup.py b/setup.py
index 3cbcebb..69012a7 100644
--- a/setup.py
+++ b/setup.py
@@ -1,16 +1,16 @@
 from setuptools import setup, find_packages
 
-install_requires = ["pandas", "pyarrow >= 0.12.1", "pathos >= 0.2.4"]
+install_requires = ["pandas", "pyarrow >= 0.12.1", "pathos >= 0.2.4", "ipywidgets"]
 
 setup(
     name="pandarallel",
-    version="1.3.3",
+    version="1.3.4",
     python_requires=">=3.5",
     packages=find_packages(),
     author="Manu NALEPA",
     author_email="nalepae@gmail.com",
     description="An easy to use library to speed up computation (by parallelizing on multi CPUs) with pandas.",
-    long_description="See https://github.com/nalepae/pandarallel/tree/v1.3.3 for complete user guide.",
+    long_description="See https://github.com/nalepae/pandarallel/tree/v1.3.4 for complete user guide.",
     url="https://github.com/nalepae/pandarallel",
     install_requires=install_requires,
     license="BSD",