diff --git a/setup.py b/setup.py
index 0892929..a2fa69e 100644
--- a/setup.py
+++ b/setup.py
@@ -11,13 +11,13 @@
     packages=["cctk", "cctk.data", "cctk.groups"],
 #    include_package_data=True,
     package_data={"cctk.data": ["*"], "cctk.groups": ["*"],},
-    version="v0.2.19",
+    version="v0.2.20",
     license="Apache 2.0",
     description="computational chemistry toolkit",
     author="Corin Wagen and Eugene Kwan",
     author_email="corin.wagen@gmail.com",
     url="https://github.com/ekwan/cctk",
-    download_url="https://github.com/ekwan/cctk/archive/v0.2.19.tar.gz",
+    download_url="https://github.com/ekwan/cctk/archive/v0.2.20.tar.gz",
     install_requires=["numpy", "networkx", "importlib_resources", "scipy", "pyahocorasick", "basis_set_exchange", "pyyaml"],
     long_description=long_description,
     long_description_content_type='text/markdown',