diff --git a/docs/source/conf.py b/docs/source/conf.py
index ad653dc..ab50c92 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -22,7 +22,7 @@
 author = 'Tristan de Lataillade'
 
 # The full version, including alpha/beta/rc tags
-release = '0.0.1'
+release = '0.4.0'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/setup.py b/setup.py
index 7a39942..2ba98aa 100644
--- a/setup.py
+++ b/setup.py
@@ -6,14 +6,14 @@
 
 setup(name='pycatenary',
       packages=['pycatenary'],
-      version='0.3',
+      version='0.4.0',
       description='A Python library for solving catenary equations',
       long_description=long_description,
       long_description_content_type='text/markdown',
       author='Tristan de Lataillade',
       author_email='delataillade.tristan@gmail.com',
       url='https://github.com/tridelat/pycatenary',
-      download_url='https://github.com/tridelat/pycatenary/archive/v0.3.tar.gz',
+      download_url='https://github.com/tridelat/pycatenary/archive/v0.4.0.tar.gz',
       keywords=['catenary', 'mooring', 'python'],
       classifiers=["Programming Language :: Python :: 3",
                    "License :: OSI Approved :: MIT License",