diff --git a/yesod-core/bench/widget.hs b/yesod-core/bench/widget.hs
index 59b18922..7eefb906 100644
--- a/yesod-core/bench/widget.hs
+++ b/yesod-core/bench/widget.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE FlexibleContexts #-}
 -- | BigTable benchmark implemented using Hamlet.
 --
 {-# LANGUAGE QuasiQuotes #-}
diff --git a/yesod-core/yesod-core.cabal b/yesod-core/yesod-core.cabal
index 1ed8b27b..c1aab4bb 100644
--- a/yesod-core/yesod-core.cabal
+++ b/yesod-core/yesod-core.cabal
@@ -177,6 +177,7 @@ benchmark widgets
                   , transformers
                   , yesod-core
                   , blaze-html
+                  , shakespeare
     main-is:        widget.hs
     ghc-options:    -Wall -O2