diff --git a/setup.py b/setup.py
index 6c243cf175d10649de6bf63153a207bf83b73bc3..54917b5a0c2af739333057e6eb7dd1ef64f54f4b 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@ if ssl_cert_file:
 
 setuptools.setup(
     name="geomag-algorithms",
-    version="1.0.2",
+    version="1.0.0",
     description="USGS Geomag Algorithms Library",
     url="https://github.com/usgs/geomag-algorithms",
     packages=setuptools.find_packages(exclude=["test*"]),