diff --git a/conda/empyrical/meta.yaml b/conda/empyrical/meta.yaml
index 670409de..a7514e83 100644
--- a/conda/empyrical/meta.yaml
+++ b/conda/empyrical/meta.yaml
@@ -12,14 +12,14 @@ requirements:
   build:
     - python
     - setuptools
-    - numpy >=1.9.2
+    - numpy x.x
     - pandas >=0.16.1
     - scipy >=0.15.1
     - bottleneck >=1.0.0
 
   run:
     - python
-    - numpy >=1.9.2
+    - numpy x.x
     - pandas >=0.16.1
     - scipy >=0.15.1
     - bottleneck >=1.0.0