diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index e933b96d134c..83bbf3b96e8e 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -266,7 +266,11 @@ let
       python2Packages = { };
       python27Packages = { };
       python3Packages = { };
-      python35Packages = { };
+      python35Packages = {
+        blaze = unix;
+        pandas = unix;
+        scikitlearn = unix;
+      };
 
       xorg = {
         fontadobe100dpi = linux ++ darwin;