diff --git a/etc/requirements_sci.txt b/etc/requirements_sci.txt
index 3c72a01d..e9ab5111 100644
--- a/etc/requirements_sci.txt
+++ b/etc/requirements_sci.txt
@@ -4,7 +4,7 @@ python-dateutil==1.5
 
 # Core scientific python
 numpy>=1.6.1
-pandas=0.8.0
+pandas==0.8.0
 scipy>=0.10.0
 
 matplotlib==1.1.0
@@ -12,8 +12,8 @@ matplotlib==1.1.0
 
 numexpr==2.0.1
 Cython==0.15.1
-statsmodels==0.5.0
 patsy==0.1.0
+statsmodels==0.5.0
 
 
 # ZeroMQ