diff --git a/servant-auth/servant-auth-server/servant-auth-server.cabal b/servant-auth/servant-auth-server/servant-auth-server.cabal
index 17d4c63f..99499dbb 100644
--- a/servant-auth/servant-auth-server/servant-auth-server.cabal
+++ b/servant-auth/servant-auth-server/servant-auth-server.cabal
@@ -54,9 +54,7 @@ library
     , time                    >= 1.5.0.1  && < 1.10
     , unordered-containers    >= 0.2.9.0  && < 0.3
     , wai                     >= 3.2.1.2  && < 3.3
-  if !impl(ghc >= 8.0)
-    build-depends:
-      semigroups >= 0.18.5 && <0.20
+
   exposed-modules:
       Servant.Auth.Server
       Servant.Auth.Server.Internal
@@ -89,6 +87,8 @@ test-suite readme
   default-language: Haskell2010
   if impl(ghcjs)
     buildable: False
+  if impl(ghc >= 9)
+    buildable: False
 
 test-suite spec
   type: exitcode-stdio-1.0
@@ -114,6 +114,8 @@ test-suite spec
     , servant
     , servant-server
     , transformers
+  if impl(ghc >= 9)
+    buildable: False
 
   -- test dependencies
   build-depends: