diff --git a/conda/empyrical/meta.yaml b/conda/empyrical/meta.yaml
index 4dc8ab8d..5c94c3c3 100644
--- a/conda/empyrical/meta.yaml
+++ b/conda/empyrical/meta.yaml
@@ -11,14 +11,14 @@ requirements:
   build:
     - python
     - setuptools
-    - numpy x.x
+    - numpy >=1.9.2
     - pandas >=0.16.1
     - scipy >=0.15.1
     - bottleneck >=1.0.0
 
   run:
     - python
-    - numpy x.x
+    - numpy >=1.9.2
     - pandas >=0.16.1
     - scipy >=0.15.1
     - bottleneck >=1.0.0