diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 0ac194c..24cc460 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -8,7 +8,7 @@ jobs:
   test:
     strategy:
       matrix:
-        ghc: [8.6.5, 8.8.3, 8.10.1]
+        ghc: ['9.2.8', '9.4.4', '9.6.2']
         test: [doctest, spec]
 
     runs-on: ubuntu-latest
diff --git a/either-result.cabal b/either-result.cabal
index 244147f..902fef8 100644
--- a/either-result.cabal
+++ b/either-result.cabal
@@ -13,7 +13,7 @@ maintainer: kazuki.okamoto@kakkun61.com
 copyright: 2020 Kazuki Okamoto (岡本和樹)
 category: Data
 build-type: Simple
-tested-with: GHC == 8.6.5, GHC == 8.8.3, GHC == 8.10.1
+tested-with: GHC == 9.2.8, GHC == 9.4.4, GHC == 9.6.2
 extra-source-files: README.md,
                     CHANGELOG.md