diff --git a/servant-server/servant-server.cabal b/servant-server/servant-server.cabal
index cc28819e..1a221ea0 100644
--- a/servant-server/servant-server.cabal
+++ b/servant-server/servant-server.cabal
@@ -67,7 +67,7 @@ library
       , wai                >= 3.0  && < 3.1
       , wai-app-static     >= 3.0  && < 3.2
       , warp               >= 3.0  && < 3.2
-      , word8              >= 0.1.0
+      , word8              >= 0.1.0 && < 0.1.3
       , jwt
   hs-source-dirs: src
   default-language: Haskell2010