diff --git a/psqueues.cabal b/psqueues.cabal
index 8e5e3ed..9b3ea2e 100644
--- a/psqueues.cabal
+++ b/psqueues.cabal
@@ -67,7 +67,7 @@ Library
 
     Build-depends:
           base     >= 4.2     && < 5
-        , deepseq  >= 1.2     && < 1.5
+        , deepseq  >= 1.2     && < 1.6
         , hashable >= 1.1.2.3 && < 1.5
 
     if impl(ghc>=6.10)
@@ -145,7 +145,7 @@ Test-suite psqueues-tests
     Build-depends:
           HUnit            >= 1.2 && < 1.7
         , QuickCheck       >= 2.7 && < 2.15
-        , tasty            >= 1.2 && < 1.5
+        , tasty            >= 1.2 && < 1.6
         , tasty-hunit      >= 0.9 && < 0.11
         , tasty-quickcheck >= 0.8 && < 0.11