diff --git a/preserve/__init__.py b/preserve/__init__.py
index 2a5c2e5..6c976dd 100644
--- a/preserve/__init__.py
+++ b/preserve/__init__.py
@@ -1 +1 @@
-version='2.1.0'
+version = '1.0.0'
diff --git a/setup.py b/setup.py
index 333df28..ad9db1d 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='preserve',
-    version='2.0.0',
+    version='1.0.0',
     description='Command-line digital preservation utilities.',
     author='Joshua A. Westgard',
     author_email="westgard@umd.edu",