diff --git a/servant/servant.cabal b/servant/servant.cabal
index 8b2afc00..f273b176 100644
--- a/servant/servant.cabal
+++ b/servant/servant.cabal
@@ -60,11 +60,15 @@ library
     , http-types            >= 0.8  && < 0.10
     , mtl                   >= 2.0  && < 2.3
     , mmorph                >= 1    && < 1.1
-    , semigroups            >= 0.16 && < 0.19
     , text                  >= 1    && < 1.3
     , string-conversions    >= 0.3  && < 0.5
     , network-uri           >= 2.6  && < 2.7
     , vault                 >= 0.3  && < 0.4
+
+  if !impl(ghc >= 8.0)
+    build-depends:
+      semigroups            >= 0.16 && < 0.19
+
   hs-source-dirs: src
   default-language: Haskell2010
   other-extensions: CPP