diff --git a/recursion-schemes-ext.cabal b/recursion-schemes-ext.cabal
--- a/recursion-schemes-ext.cabal
+++ b/recursion-schemes-ext.cabal
@@ -1,5 +1,5 @@
 name:                recursion-schemes-ext
-version:             0.1.0.4
+version:             0.1.0.5
 synopsis:            Amateur addenda to recursion-schemes
 description:         This package provides some exotic recursion schemes that I miss when I leave Idris.
 homepage:            https://hub.darcs.net/vmchale/recursion-schemes-ext#readme
@@ -25,13 +25,13 @@
   hs-source-dirs:      src
   exposed-modules:     Data.Functor.Foldable.Extensions
                        Data.Functor.Foldable.Examples
-  build-depends:       base > 4.8 && < 5
+  build-depends:       base > 4.9 && < 4.11
                      , recursion-schemes >= 5.0
                      , composition-prelude
                      , deepseq
   default-language:    Haskell2010
   if flag(development)
-    ghc-options: -Werror
+    ghc-options:       -Werror
   ghc-options:         -Wall -Wincomplete-uni-patterns -Wincomplete-record-updates -Wmissing-import-lists
 
 test-suite recursion-schemes-test
@@ -44,7 +44,7 @@
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N
   default-language:    Haskell2010
   if flag(development)
-    ghc-options: -Werror
+    ghc-options:       -Werror
   ghc-options:         -Wall -Wincomplete-uni-patterns -Wincomplete-record-updates -Wmissing-import-lists
 
 benchmark recursion-schemes-bench
@@ -57,7 +57,7 @@
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N -O3
   default-language:    Haskell2010
   if flag(development)
-    ghc-options: -Werror
+    ghc-options:       -Werror
   ghc-options:         -Wall -Wincomplete-uni-patterns -Wincomplete-record-updates -Wmissing-import-lists
 
 source-repository head