diff --git a/ddc-core.cabal b/ddc-core.cabal
--- a/ddc-core.cabal
+++ b/ddc-core.cabal
@@ -1,5 +1,5 @@
 Name:           ddc-core
-Version:        0.2.1.1
+Version:        0.2.1.2
 License:        MIT
 License-file:   LICENSE
 Author:         The Disciplined Disciple Compiler Strike Force
@@ -24,11 +24,11 @@
 
 Library
   Build-Depends: 
-        base            == 4.5.*,
-        containers      == 0.4.*,
+        base            == 4.6.*,
+        containers      == 0.5.*,
         array           == 0.4.*,
-        transformers    == 0.2.*,
-        mtl             == 2.0.*,
+        transformers    == 0.3.*,
+        mtl             == 2.1.*,
         ddc-base        == 0.2.1.*
 
   Exposed-modules: