diff --git a/requirements.txt b/requirements.txt
index 8b2077f..998e43b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-setuptools
-wheel
-twine
-tox
+setuptools>=40.8.0
+wheel>=0.33.1
+twine>=1.13.0
+tox>=3.8.4
diff --git a/setup.py b/setup.py
index e531212..7be7a27 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 setup(
     name='python-gedcom',
-    version='1.0.0dev',
+    version='1.0.0',
     description='A Python module for parsing, analyzing, and manipulating GEDCOM files.',
     long_description=long_description,
     long_description_content_type='text/markdown',