diff --git a/ghc-mod.cabal b/ghc-mod.cabal
index 6b39298..06ab2f0 100644
--- a/ghc-mod.cabal
+++ b/ghc-mod.cabal
@@ -1,5 +1,5 @@
 Name:                   ghc-mod
-Version:                0.2.0
+Version:                0.3.0
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
@@ -25,9 +25,9 @@ Executable ghc-mod
   Main-Is:              GHCMod.hs
   Other-Modules:        List Browse Check Param Lang
   if impl(ghc >= 6.12)
-    GHC-Options:        -Wall -O2 -fno-warn-unused-do-bind
+    GHC-Options:        -Wall -fno-warn-unused-do-bind
   else
-    GHC-Options:        -Wall -O2
+    GHC-Options:        -Wall
   Build-Depends:        base >= 4.0 && < 5,
                         parsec >= 3, process, haskell-src-exts,
                         directory, filepath