diff --git a/setup.py b/setup.py
index 9164a9b..0871681 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ def finalize_options(self):
 
     def run(self):
         spec_content = f"""%global name md5sift
-%global version 1.1.0
+%global version 1.0.0
 %global release 1%{{?dist}}
 %global summary Generate MD5 checksum reports with filtering.
 
@@ -69,7 +69,7 @@ def run(self):
 
 setup(
     name='md5sift',
-    version='1.1.0',
+    version='1.0.0',
     packages=find_packages(),
     entry_points={
         'console_scripts': [