diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 0.4.0.1
+
+* Fixed a compiler warning.
+* Bumped dependencies.
+
 # 0.4.0.0
 
 * Generalized all types by not returning the value (since it can't be used anyway).
diff --git a/Spock-lucid.cabal b/Spock-lucid.cabal
--- a/Spock-lucid.cabal
+++ b/Spock-lucid.cabal
@@ -1,8 +1,8 @@
 name:                Spock-lucid
-version:             0.4.0.0
+version:             0.4.0.1
 synopsis:            Lucid support for Spock
 description:
-  Lucid support for Spock
+  Functions to use Lucid-generated HTML in Spock responses.
 homepage:            http://github.com/aelve/Spock-lucid
 bug-reports:         http://github.com/aelve/Spock-lucid/issues
 license:             BSD3
@@ -11,7 +11,7 @@
 maintainer:          yom@artyom.me
 -- copyright:           
 category:            Web
-tested-with:         GHC == 7.8.4, GHC == 7.10.3, GHC == 8.0.1
+tested-with:         GHC == 7.8.4, GHC == 7.10.3, GHC == 8.0.1, GHC == 8.2.1
 build-type:          Simple
 extra-source-files:  CHANGELOG.md
 cabal-version:       >=1.10
@@ -25,7 +25,7 @@
   -- other-modules:       
   -- other-extensions:    
   build-depends:       Spock >= 0.9
-                     , base >= 4.7 && < 4.10
+                     , base >= 4.7 && < 5
                      , lucid == 2.*
                      , transformers
   ghc-options:         -Wall -fno-warn-unused-do-bind
diff --git a/lib/Web/Spock/Lucid.hs b/lib/Web/Spock/Lucid.hs
--- a/lib/Web/Spock/Lucid.hs
+++ b/lib/Web/Spock/Lucid.hs
@@ -11,7 +11,6 @@
 where
 
 
-import Data.Functor.Identity
 import Control.Monad.IO.Class
 import Control.Monad.Trans.Class
 import Web.Spock