diff --git a/ddc-source-tetra.cabal b/ddc-source-tetra.cabal
--- a/ddc-source-tetra.cabal
+++ b/ddc-source-tetra.cabal
@@ -1,5 +1,5 @@
 Name:           ddc-source-tetra
-Version:        0.4.1.1
+Version:        0.4.1.3
 License:        MIT
 License-file:   LICENSE
 Author:         The Disciplined Disciple Compiler Strike Force
@@ -21,8 +21,8 @@
         array            >= 0.4 && < 0.6,
         deepseq          == 1.3.*,
         containers       == 0.5.*,
-        transformers     == 0.3.*,
-        mtl              == 2.1.*,
+        transformers     == 0.4.*,
+        mtl              == 2.2.*,
         ddc-base         == 0.4.1.*,
         ddc-core         == 0.4.1.*,
         ddc-core-salt    == 0.4.1.*,