diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 0.5.4
+
+* Derive ‘Eq’ for ‘ResponseTimeout’ [#239](https://github.com/snoyberg/http-client/pull/239)
+
 ## 0.5.3.4
 
 * Doc improvements
diff --git a/Network/HTTP/Client/Types.hs b/Network/HTTP/Client/Types.hs
--- a/Network/HTTP/Client/Types.hs
+++ b/Network/HTTP/Client/Types.hs
@@ -547,7 +547,7 @@
     = ResponseTimeoutMicro !Int
     | ResponseTimeoutNone
     | ResponseTimeoutDefault
-    deriving Show
+    deriving (Eq, Show)
 
 instance Show Request where
     show x = unlines
diff --git a/http-client.cabal b/http-client.cabal
--- a/http-client.cabal
+++ b/http-client.cabal
@@ -1,5 +1,5 @@
 name:                http-client
-version:             0.5.3.4
+version:             0.5.4
 synopsis:            An HTTP client engine
 description:         Hackage documentation generation is not reliable. For up to date documentation, please see: <http://www.stackage.org/package/http-client>.
 homepage:            https://github.com/snoyberg/http-client