diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c38dbc076..d37861eb2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -49,16 +49,16 @@ jobs:
           # NOTE: Update `CONTRIBUTING.md` when changing the minimum version
           - ghc: '9.6'
             cabal: 'latest'
-            cabalopts: '--ghc-option=-Werror'
+            cabalopts: '--ghc-option=-Werror -fhttp'
           - ghc: '9.8'
             cabal: 'latest'
-            cabalopts: '--ghc-option=-Werror'
+            cabalopts: '--ghc-option=-Werror -fhttp'
           - ghc: '9.10'
             cabal: 'latest'
-            cabalopts: '--ghc-option=-Werror'
+            cabalopts: '--ghc-option=-Werror -fhttp'
           - ghc: '9.12'
             cabal: 'latest'
-            cabalopts: '--ghc-option=-Werror'
+            cabalopts: '--ghc-option=-Werror -fhttp'
           - ghc: '9.12'
             cabal: 'latest'
             cabalopts: '--ghc-option=-Werror -f-http --test-option="-p /XXXXX/"'