1 files changed, 1 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index ccb9f3d6..07ebbf7d 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@ with open('README.rst') as f:
     readme = f.read()
 
 extras_require = {
-    'voice': ['PyNaCl==1.3.0'],
+    'voice': ['PyNaCl>=1.3.0,<1.5'],
     'docs': [
         'sphinx==1.8.5',
         'sphinxcontrib_trio==1.1.1',