diff --git a/machines-directory.cabal b/machines-directory.cabal
--- a/machines-directory.cabal
+++ b/machines-directory.cabal
@@ -1,5 +1,5 @@
 name:                machines-directory
-version:             0.2.0.8
+version:             0.2.0.9
 synopsis:            Directory (system) utilities for the machines library
 homepage:            http://github.com/aloiscochard/machines-directory
 license:             Apache-2.0
@@ -21,7 +21,7 @@
       base                >= 4.6      && < 5
     , directory           >= 1.2      && < 1.3
     , filepath            >= 1.3      && < 1.5
-    , transformers        >= 0.3      && < 0.5
+    , transformers        >= 0.3      && < 0.6
     , machines            >= 0.2.4    && < 0.7
     , machines-io         >= 0.1      && < 0.3