diff --git a/unix.cabal b/unix.cabal
index cac03c6..f8d486e 100644
--- a/unix.cabal
+++ b/unix.cabal
@@ -83,7 +83,7 @@ library
 
     build-depends:
         base        >= 4.12.0.0  && < 4.23,
-        bytestring  >= 0.9.2     && < 0.13,
+        bytestring  >= 0.11      && < 0.13,
         time        >= 1.9.1     && < 1.16
 
     if flag(os-string)