diff --git a/yi-rope.cabal b/yi-rope.cabal
--- a/yi-rope.cabal
+++ b/yi-rope.cabal
@@ -1,5 +1,5 @@
 name:                yi-rope
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            A rope data structure used by Yi
 description:         A rope data structure used by Yi
 license:             GPL-3
@@ -16,7 +16,7 @@
     Yi.OldRope
 
   build-depends:
-      base >=4.7 && <4.8
+      base >=4.5 && <5
     , binary
     , bytestring
     , cautious-file