diff --git a/conda/zipline/meta.yaml b/conda/zipline/meta.yaml
index 2cb91a34..5bbe111f 100644
--- a/conda/zipline/meta.yaml
+++ b/conda/zipline/meta.yaml
@@ -17,7 +17,7 @@ requirements:
   build:
     - python
     - setuptools
-    - cython ==0.22.1
+    - cython
     - numpy
   run:
     - python