diff --git a/dph-prim-interface.cabal b/dph-prim-interface.cabal
--- a/dph-prim-interface.cabal
+++ b/dph-prim-interface.cabal
@@ -1,5 +1,5 @@
 Name:           dph-prim-interface
-Version:        0.6.0.1
+Version:        0.6.1.1
 License:        BSD3
 License-File:   LICENSE
 Author:         The DPH Team
@@ -36,6 +36,6 @@
   Build-Depends: 
         base     == 4.5.*,
         random   == 1.0.*,
-        dph-base == 0.6.*,
-        vector   == 0.9.*
+        vector   == 0.9.*,
+        dph-base == 0.6.1.*