diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,15 @@
+## [v1.3.0.6](https://github.com/diagrams/diagrams-html5/tree/v1.3.0.6) (2016-06-17)
+
+- allow `base-4.9`
+- allow `data-default-class-0.1`
+
+[Full Changelog](https://github.com/diagrams/diagrams-html5/compare/v1.3.0.5...v1.3.0.6)
+
 ## [v1.3.0.5](https://github.com/diagrams/diagrams-html5/tree/v1.3.0.5) (2016-05-01)
 
 - allow `lens-4.14`
 
-[Full Changelog](https://github.com/diagrams/diagrams-html5/compare/v1.3.0.3...v1.3.0.5)
+[Full Changelog](https://github.com/diagrams/diagrams-html5/compare/v1.3.0.4...v1.3.0.5)
 
 ## [v1.3.0.4](https://github.com/diagrams/diagrams-html5/tree/v1.3.0.4) (2015-09-29)
 
diff --git a/diagrams-html5.cabal b/diagrams-html5.cabal
--- a/diagrams-html5.cabal
+++ b/diagrams-html5.cabal
@@ -1,5 +1,5 @@
 Name:                diagrams-html5
-Version:             1.3.0.5
+Version:             1.3.0.6
 Synopsis:            HTML5 canvas backend for diagrams drawing EDSL
 Description:         This package provides a modular backend for rendering
                      diagrams created with the diagrams EDSL using an
@@ -14,7 +14,7 @@
 Category:            Graphics
 Build-type:          Simple
 Extra-source-files:  README.md, CHANGELOG.md
-Tested-with:         GHC == 7.8.4, GHC == 7.10.1
+Tested-with:         GHC == 7.8.4, GHC == 7.10.1, GHC == 8.0.1
 Cabal-version:       >=1.10
 Source-repository head
   type:     git
@@ -24,7 +24,7 @@
   Exposed-modules:     Diagrams.Backend.Html5
                        Diagrams.Backend.Html5.CmdLine
   Hs-source-dirs:      src
-  Build-depends:       base >= 4.6 && < 4.9,
+  Build-depends:       base >= 4.7 && < 4.10,
                        mtl >= 2.0 && < 3.0,
                        NumInstances >= 1.0 && < 1.5,
                        diagrams-core >= 1.3 && < 1.4,
@@ -34,7 +34,7 @@
                        lens >= 4.0 && < 4.15,
                        containers >= 0.3 && < 0.6,
                        text >= 1.0 && < 1.3,
-                       data-default-class >= 0.0.1 && < 0.1,
+                       data-default-class >= 0.0.1 && < 0.2,
                        statestack >= 0.2 && <0.3,
                        optparse-applicative >= 0.10 && < 0.13,
                        split >= 0.2 && < 0.3
diff --git a/src/Diagrams/Backend/Html5.hs b/src/Diagrams/Backend/Html5.hs
--- a/src/Diagrams/Backend/Html5.hs
+++ b/src/Diagrams/Backend/Html5.hs
@@ -84,7 +84,6 @@
 
   ) where
 
-import           Control.Lens                 hiding (transform, (#))
 import           Control.Monad.State          (when)
 import qualified Control.Monad.StateStack     as SS
 import           Control.Monad.Trans          (lift)
@@ -161,7 +160,7 @@
     where
       V2 w h = specToSize 100 (opts^.size)
       buildF | opts^.standalone = H.buildDoc
-             | otherwise        = \w h -> H.buildScript' w h (opts^.canvasId.to T.pack)
+             | otherwise        = \wd ht -> H.buildScript' wd ht (opts^.canvasId.to T.pack)
 
   adjustDia c opts d = adjustDia2D size c opts (d # reflectY)
 
@@ -323,6 +322,7 @@
     a = case wgt of
           FontWeightNormal -> ""
           FontWeightBold   -> "bold"
+          _                -> ""
     b = case slant of
           FontSlantNormal  -> ""
           FontSlantItalic  -> "italic"
diff --git a/src/Diagrams/Backend/Html5/CmdLine.hs b/src/Diagrams/Backend/Html5/CmdLine.hs
--- a/src/Diagrams/Backend/Html5/CmdLine.hs
+++ b/src/Diagrams/Backend/Html5/CmdLine.hs
@@ -66,7 +66,6 @@
 import           Diagrams.Backend.Html5
 
 import           Data.List.Split           (splitOn)
-import           Control.Lens              ((^.))
 
 defaultMain :: QDiagram Html5 V2 Double Any -> IO ()
 defaultMain = mainWith