diff --git a/CHANGES.markdown b/CHANGES.markdown
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -1,3 +1,8 @@
+0.5.0.5 (19 March 2014)
+----------------------
+
+  - Allow `lens-4.1`
+
 0.5.0.4 (15 March 2014)
 -----------------------
 
diff --git a/diagrams-builder.cabal b/diagrams-builder.cabal
--- a/diagrams-builder.cabal
+++ b/diagrams-builder.cabal
@@ -1,5 +1,5 @@
 name:                diagrams-builder
-version:             0.5.0.4
+version:             0.5.0.5
 synopsis:            hint-based build service for the diagrams graphics EDSL.
 
 description:         @diagrams-builder@ provides backend-agnostic tools for
@@ -36,7 +36,7 @@
 category:            Graphics
 build-type:          Simple
 cabal-version:       >=1.10
-tested-with:         GHC == 7.4.2, GHC == 7.6.1
+tested-with:         GHC == 7.4.2, GHC == 7.6.1, GHC == 7.8.1
 bug-reports:         https://github.com/diagrams/diagrams-builder/issues
 Source-repository head
   type:     git
@@ -57,7 +57,7 @@
                        split >= 0.2 && < 0.3,
                        haskell-src-exts >= 1.14 && < 1.15,
                        cmdargs >= 0.6 && < 0.11,
-                       lens >= 3.9 && < 4.1,
+                       lens >= 3.9 && < 4.2,
                        hashable >= 1.1 && < 1.3,
                        exceptions >= 0.3 && < 0.4
   hs-source-dirs:      src