diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 54d9550..4f8cf4c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,8 +23,8 @@ jobs:
             cabal: '3.6'
           - ghc: '8.10.7'
             cabal: '3.6'
-          # - ghc: '9.0.2'
-          #   cabal: '3.6'
+          - ghc: '9.0.2'
+            cabal: '3.6'
 
     steps:
     - uses: actions/checkout@v2
diff --git a/servant-ekg.cabal b/servant-ekg.cabal
index 2d8620c..8bc1067 100644
--- a/servant-ekg.cabal
+++ b/servant-ekg.cabal
@@ -13,7 +13,7 @@ maintainer:
 
 category:      Servant, Web, System
 build-type:    Simple
-tested-with:   GHC ==8.6.5 || ==8.8.4 || ==8.10.7
+tested-with:   GHC ==8.6.5 || ==8.8.4 || ==8.10.7 || ==9.0.2
 extra-source-files: README.md CHANGELOG.md
 
 source-repository HEAD