diff --git a/src/py/crankshaft/crankshaft/__init__.py b/src/py/crankshaft/crankshaft/__init__.py
index d07e330..b0e16d3 100644
--- a/src/py/crankshaft/crankshaft/__init__.py
+++ b/src/py/crankshaft/crankshaft/__init__.py
@@ -1,2 +1,3 @@
 import random_seeds
 import clustering
+import similarity