diff --git a/preamble.cabal b/preamble.cabal
--- a/preamble.cabal
+++ b/preamble.cabal
@@ -1,5 +1,5 @@
 name: preamble
-version: 0.0.42
+version: 0.0.43
 cabal-version: >=1.22
 build-type: Simple
 license: MIT
@@ -60,7 +60,7 @@
 executable shake-preamble
     main-is: Shakefile.hs
     build-depends:
-        base >=4.8.2.0,
+        base >=4.8 && <5,
         shakers >=0.0.25
     default-language: Haskell2010
     ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall