diff --git a/Michelangelo.cabal b/Michelangelo.cabal
--- a/Michelangelo.cabal
+++ b/Michelangelo.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.2.3.0
+version:             0.2.4.0
 
 -- A short (one-line) description of the package.
 synopsis:            OpenGL for dummies
@@ -63,7 +63,7 @@
   other-extensions:    TypeSynonymInstances, FlexibleInstances
 
   -- Other library packages from which modules are imported.
-  build-depends:       base <= 4.8.1.0,
+  build-depends:       base == 4.*,
                        lens <= 4.13.0.0,
                        bytestring,
                        linear,