diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,15 @@
   [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-http-streams/CHANGELOG.md)
 [Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
+0.18.3
+------
+
+### Other changes
+
+- Support GHC-9.0.1.
+- Fix test suite running in CI.
+- Bump `bytestring` and `hspec` dependencies.
+
 0.18.2
 ------
 
diff --git a/servant-http-streams.cabal b/servant-http-streams.cabal
--- a/servant-http-streams.cabal
+++ b/servant-http-streams.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >=1.10
 name:                servant-http-streams
-version:             0.18.2
+version:             0.18.3
 
 synopsis:            Automatic derivation of querying functions for servant
 category:            Servant, Web
@@ -20,7 +20,7 @@
 maintainer:          haskell-servant-maintainers@googlegroups.com
 copyright:           2019 Servant Contributors
 build-type:          Simple
-tested-with: GHC ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.2
+tested-with: GHC ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.2 || ==9.0.1
 
 extra-source-files:
   CHANGELOG.md
@@ -38,8 +38,8 @@
   -- Bundled with GHC: Lower bound to not force re-installs
   -- text and mtl are bundled starting with GHC-8.4
   build-depends:
-      base                  >= 4.9      && < 4.15
-    , bytestring            >= 0.10.8.1 && < 0.11
+      base                  >= 4.9      && < 4.16
+    , bytestring            >= 0.10.8.1 && < 0.12
     , containers            >= 0.5.7.1  && < 0.7
     , deepseq               >= 1.4.2.0  && < 1.5
     , mtl                   >= 2.2.2    && < 2.3
@@ -55,7 +55,7 @@
   -- Strict dependency on `servant-client-core` as we re-export things.
   build-depends:
       servant               == 0.18.*
-    , servant-client-core   >= 0.18.2 && <0.18.3
+    , servant-client-core   >= 0.18.3 && <0.18.4
 
   -- Other dependencies: Lower bound around what is in the latest Stackage LTS.
   -- Here can be exceptions if we really need features from the newer versions.
@@ -112,16 +112,16 @@
   -- Additional dependencies
   build-depends:
       entropy           >= 0.4.1.3  && < 0.5
-    , hspec             >= 2.6.0    && < 2.8
+    , hspec             >= 2.6.0    && < 2.9
     , HUnit             >= 1.6.0.0  && < 1.7
     , network           >= 2.8.0.0  && < 3.2
-    , QuickCheck        >= 2.12.6.1 && < 2.14
+    , QuickCheck        >= 2.12.6.1 && < 2.15
     , servant           == 0.18.*
     , servant-server    == 0.18.*
     , tdigest           >= 0.2     && < 0.3
 
   build-tool-depends:
-    hspec-discover:hspec-discover >= 2.6.0 && < 2.8
+    hspec-discover:hspec-discover >= 2.6.0 && < 2.9
 
 test-suite readme
   type:           exitcode-stdio-1.0
diff --git a/test/Servant/ClientSpec.hs b/test/Servant/ClientSpec.hs
--- a/test/Servant/ClientSpec.hs
+++ b/test/Servant/ClientSpec.hs
@@ -482,7 +482,7 @@
     (port, socket) <- openTestSocket
     let settings = setPort port $ defaultSettings
     thread <- forkIO $ runSettingsSocket settings socket app
-    return (thread, BaseUrl Http "localhost" port "")
+    return (thread, BaseUrl Http "127.0.0.1" port "")
 
 
 endWaiApp :: (ThreadId, BaseUrl) -> IO ()