diff --git a/gwcli.cabal b/gwcli.cabal
index 3fb4399..dd5eb25 100644
--- a/gwcli.cabal
+++ b/gwcli.cabal
@@ -1,7 +1,7 @@
 cabal-version: 3.14
 
 name:           gwcli
-version:        0.9.8.0
+version:        0.9.9.0
 description:    Please see the README on GitHub at <https://github.com/diskshima/gwcli-hs#readme>
 homepage:       https://github.com/diskshima/gwcli-hs
 bug-reports:    https://github.com/diskshima/gwcli-hs/issues
@@ -81,7 +81,7 @@ executable gwcli
       Paths_gwcli
   hs-source-dirs:
       app
-  ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall -O4
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N4 -Wall -O2 -optc-O3 -funbox-strict-fields -fexcess-precision -fspecialise-aggressively
   build-depends:
       gwcli
     , base >=4.7 && <5
@@ -120,7 +120,7 @@ test-suite gwcli-test
       Paths_gwcli
   hs-source-dirs:
       test
-  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall
   build-depends:
       HTTP
     , aeson