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:        0.4.1.1
+Version:        0.4.1.2
 License:        MIT
 License-file:   LICENSE
 Author:         The Disciplined Disciple Compiler Strike Force
@@ -27,8 +27,8 @@
         deepseq         == 1.3.*,
         containers      == 0.5.*,
         directory       == 1.2.*,
-        transformers    == 0.3.*,
-        mtl             == 2.1.*,
+        transformers    == 0.4.*,
+        mtl             == 2.2.*,
         ddc-base        == 0.4.1.*
 
   Exposed-modules: