diff --git a/servant-server/CHANGELOG.md b/servant-server/CHANGELOG.md
index 4a1d4f33..99c329d8 100644
--- a/servant-server/CHANGELOG.md
+++ b/servant-server/CHANGELOG.md
@@ -2,6 +2,7 @@
 -----
 * Bump attoparsec upper bound to < 0.14
 * Bump wai-app-static upper bound to < 3.2
+* Bump either upper bound to < 4.5
 
 0.4
 ---
diff --git a/servant-server/servant-server.cabal b/servant-server/servant-server.cabal
index 8aea2e55..d540a9e0 100644
--- a/servant-server/servant-server.cabal
+++ b/servant-server/servant-server.cabal
@@ -43,7 +43,7 @@ library
       , aeson              >= 0.7  && < 0.9
       , attoparsec         >= 0.12 && < 0.14
       , bytestring         >= 0.10 && < 0.11
-      , either             >= 4.3  && < 4.4
+      , either             >= 4.3  && < 4.5
       , http-types         >= 0.8  && < 0.9
       , network-uri        >= 2.6  && < 2.7
       , mtl                >= 2    && < 3