diff --git a/breve.cabal b/breve.cabal
index 5c9582c..5058627 100644
--- a/breve.cabal
+++ b/breve.cabal
@@ -23,19 +23,21 @@ source-repository head
   location: https://maxwell.ydns.eu/git/rnhmjoj/breve
 
 executable breve
-  main-is:           Main.hs
-  hs-source-dirs:    src
-  default-language:  Haskell2010
-  other-modules:     Application, Views, Breve.Settings,
-                     Breve.Generator, Breve.UrlTable,
-                     Paths_breve
-  other-extensions:  OverloadedStrings
-  build-depends:     base >=4.8 && <5.0,
-                     warp, warp-tls, tls, blaze-html, blaze-markup,
-                     servant-server, servant, servant-blaze,
-                     wai, wai-extra, streaming-commons, http-api-data,
-                     transformers, mtl,
-                     text, aeson, bytestring, binary,
-                     hashtables, cryptohash, random,
-                     configurator, directory
-  ghc-options:       -threaded -O2
+  main-is:            Main.hs
+  hs-source-dirs:     src
+  default-language:   Haskell2010
+  other-modules:      Application, Views, Breve.Settings,
+                      Breve.Generator, Breve.UrlTable,
+                      Paths_breve
+  default-extensions: OverloadedStrings
+  other-extensions:   RecordWildCards, DeriveGeneric,
+                      DataKinds, KindSignatures, TypeOperators
+  build-depends:      base >=4.8 && <5.0,
+                      warp, warp-tls, tls, blaze-html, blaze-markup,
+                      servant-server, servant, servant-blaze,
+                      wai, wai-extra, streaming-commons, http-api-data,
+                      transformers, mtl,
+                      text, aeson, bytestring, binary,
+                      hashtables, cryptohash, random,
+                      configurator, directory
+  ghc-options:        -threaded -O2
diff --git a/src/Breve/Settings.hs b/src/Breve/Settings.hs
index ddcbe37..4658b56 100644
--- a/src/Breve/Settings.hs
+++ b/src/Breve/Settings.hs
@@ -1,5 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
-
 {-|
 This module defines the Breve configuration
 parser and application settings.
diff --git a/src/Main.hs b/src/Main.hs
index 371b2c6..a9c9739 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -1,5 +1,4 @@
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE RecordWildCards   #-}
+{-# LANGUAGE RecordWildCards #-}
 
 {-|
 This is the main module, which actually
diff --git a/src/Views.hs b/src/Views.hs
index 909312e..04d73fb 100644
--- a/src/Views.hs
+++ b/src/Views.hs
@@ -1,5 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
-
 {-|
 This module contains the HTML pages used by the
 web application. These are all obtained by filling