diff --git a/pokemid.cabal b/pokemid.cabal
index 9b02342..ccc3c0e 100644
--- a/pokemid.cabal
+++ b/pokemid.cabal
@@ -11,10 +11,10 @@ cabal-version:      >= 1.10
 
 executable pokemid
   main-is:            pokemid.hs
-  build-depends:      base           >= 4.7     && < 4.8
+  build-depends:      base           >= 4.6     && < 4.8
                       , midi         >= 0.2.1.2 && < 0.3
                       , event-list   >= 0.1.0.2 && < 0.2
                       , non-negative >= 0.1     && < 0.2
-                      , containers   >= 0.5.5.1 && < 0.6
+                      , containers   >= 0.5     && < 0.6
   default-language:   Haskell2010
   ghc-options:        -Wall