diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# wai-log-0.4.0.1 (2022-11-23)
+* Export `mkOpaqueDefaultOptions` helper function
+
 # wai-log-0.4 (2022-11-22)
 * Parametrise the `LogMiddleware` type with an opaque type parameter for the request id
 * Parametrise the `Options` record type with the opaque type parameter representing the request id
diff --git a/src/Network/Wai/Log.hs b/src/Network/Wai/Log.hs
--- a/src/Network/Wai/Log.hs
+++ b/src/Network/Wai/Log.hs
@@ -43,6 +43,7 @@
 , defaultOptions
 , defaultLogRequest
 , defaultLogResponse
+, mkOpaqueDefaultOptions
 -- ** Helpers
 , logRequestId
 ) where
diff --git a/wai-log.cabal b/wai-log.cabal
--- a/wai-log.cabal
+++ b/wai-log.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.0
 name:                wai-log
-version:             0.4.0.0
+version:             0.4.0.1
 
 synopsis:            A logging middleware for WAI applications