diff --git a/nixos/invoke-ddns/setup.py b/nixos/invoke-ddns/setup.py
index f3aa492..00a597a 100644
--- a/nixos/invoke-ddns/setup.py
+++ b/nixos/invoke-ddns/setup.py
@@ -11,7 +11,7 @@ setup(name='InvokeDdns',
       packages=['invoke_ddns', 'invoke_ddns.command'],
       install_requires=[
         'tornado>=4.4',
-        'nsfn-ddns==0.2.0'
+        'nsfn_ddns==0.2.0'
       ],
       entry_points={
         'console_scripts': [