diff --git a/setup.py b/setup.py
index 47c9aec..8a5af20 100755
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@
     history = history_file.read().replace('.. :changelog:', '')
 
 requirements = [
-    'cmudict>=0.4.0'
+    'cmudict>=0.4.0,<=1.0.2'
 ]
 
 test_requirements = [