diff --git a/Chart-cairo.cabal b/Chart-cairo.cabal
--- a/Chart-cairo.cabal
+++ b/Chart-cairo.cabal
@@ -1,5 +1,5 @@
 Name: Chart-cairo
-Version: 1.9.3
+Version: 1.9.4
 License: BSD3
 License-file: LICENSE
 Copyright: Tim Docker, 2006-2014
@@ -9,10 +9,11 @@
 Synopsis: Cairo backend for Charts.
 Description: Cairo backend for Charts.
 Category: Graphics
-Cabal-Version: >= 1.6
+Cabal-Version: 1.18
 Build-Type: Simple
 
 library
+  default-language: Haskell98
   Build-depends: base >= 3 && < 5
                , old-locale
                , time, mtl, array
@@ -20,7 +21,7 @@
                , colour >= 2.2.1 && < 2.4
                , data-default-class < 0.2
                , operational >= 0.2.2 && < 0.3
-               , lens >= 3.9 && < 4.19
+               , lens >= 3.9 && < 5.3
                , Chart >= 1.9 && < 1.10
 
   Exposed-modules: