diff --git a/hinterface.cabal b/hinterface.cabal
--- a/hinterface.cabal
+++ b/hinterface.cabal
@@ -1,9 +1,9 @@
 cabal-version: >=1.22
 name: hinterface
-version: 0.8.3
+version: 0.9.0
 license: BSD3
 license-file: LICENSE
-copyright: 2016-2018 Timo Koepke, Sven Heyll
+copyright: 2016-2019 Timo Koepke, Sven Heyll
 maintainer: timo.koepke@googlemail.com, sven.heyll@gmail.com
 author: Timo Koepke, Sven Heyll
 homepage: https://github.com/lindenbaum/hinterface
@@ -50,9 +50,9 @@
     default-language: Haskell2010
     default-extensions: OverloadedStrings NamedFieldPuns
                         FlexibleContexts PatternSynonyms ViewPatterns
-    ghc-options: -Wall -O2 -funbox-strict-fields
+    ghc-options: -Wall -funbox-strict-fields
     build-depends:
-        QuickCheck >=2.11.3 && <2.12,
+        QuickCheck >=2.11.3 && <2.13,
         array >=0.5.2.0 && <0.6,
         async >=2.2.1 && <2.3,
         base >=4.9 && <5,
@@ -101,13 +101,13 @@
     other-extensions: CPP IncoherentInstances Strict StrictData
     ghc-options: -Wall -threaded -rtsopts -with-rtsopts=-N
     build-depends:
-        QuickCheck >=2.11.3 && <2.12,
+        QuickCheck >=2.11.3 && <2.13,
         async >=2.2.1,
         base >=4.9 && <5,
         binary >=0.8.5.1,
         bytestring >=0.10.8.2,
         hinterface -any,
-        hspec >=2.4 && <2.6,
+        hspec >=2.4 && <2.7,
         monad-logger >=0.3.30,
         transformers >=0.5.5.0,
         vector >=0.12.0.1