diff --git a/iproute.cabal b/iproute.cabal
--- a/iproute.cabal
+++ b/iproute.cabal
@@ -1,5 +1,5 @@
 Name:                   iproute
-Version:                1.7.10
+Version:                1.7.11
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
@@ -34,7 +34,7 @@
                         Data.IP.Mask
                         Data.IP.Op
                         Data.IP.Range
-  Build-Depends:        base >= 4.6 && < 5
+  Build-Depends:        base >= 4.9 && < 5
                       , appar
                       , byteorder
                       , bytestring