diff --git a/unix.cabal b/unix.cabal
index 6714fb223f75f26f35f3eb9d0df541650ecf9ff2..bb3155fe5ec7fc11eab72c53bdb8083e7a4b9fe0 100644
--- a/unix.cabal
+++ b/unix.cabal
@@ -62,7 +62,7 @@ library
         buildable: False
 
     build-depends:
-        base        >= 4.5     && < 4.12,
+        base        >= 4.5     && < 4.13,
         bytestring  >= 0.9.2   && < 0.11,
         time        >= 1.2     && < 1.9