diff --git a/trie-simple.cabal b/trie-simple.cabal
index 1ea0b0d..bca16c8 100644
--- a/trie-simple.cabal
+++ b/trie-simple.cabal
@@ -35,7 +35,7 @@ library
                        Data.Trie.Map.Hidden
   build-depends:       base         >= 4.14     && < 4.21,
                        containers   >= 0.5.7.1 && < 0.8,
-                       deepseq      >= 1.4.2.0 && < 1.7,
+                       deepseq      >= 1.4.2.0 && < 1.6,
                        mtl          >= 2.2.1   && < 2.4,
                        indexed-traversable >= 0.1.1 && <0.2,
                        witherable   >= 0.4 && < 0.6,