diff --git a/fgl.cabal b/fgl.cabal
index 4bbe403..53f826b 100644
--- a/fgl.cabal
+++ b/fgl.cabal
@@ -73,7 +73,7 @@ library {
 
     if flag(containers042)
         build-depends:    containers >= 0.4.2
-                        , deepseq >= 1.1.0.0 && < 1.5
+                        , deepseq >= 1.1.0.0 && < 1.6
     else
         build-depends:    containers < 0.4.2