diff --git a/monad-logger-logstash.cabal b/monad-logger-logstash.cabal
--- a/monad-logger-logstash.cabal
+++ b/monad-logger-logstash.cabal
@@ -1,41 +1,49 @@
-cabal-version:      1.12
-name:               monad-logger-logstash
-version:            0.2.0.1
-license:            MIT
-license-file:       LICENSE
-copyright:          Copyright (c) 2021 Michael B. Gale
-maintainer:         github@michael-gale.co.uk
-author:             Michael B. Gale
-homepage:           https://github.com/mbg/logstash#readme
-bug-reports:        https://github.com/mbg/logstash/issues
-synopsis:           Logstash backend for monad-logger.
-description:
-    Please see the README on GitHub at <https://github.com/mbg/logstash#readme>
+cabal-version: 1.12
 
-category:           System
-build-type:         Simple
+-- This file has been generated from package.yaml by hpack version 0.34.4.
+--
+-- see: https://github.com/sol/hpack
+
+name:           monad-logger-logstash
+version:        0.2.0.2
+synopsis:       Logstash backend for monad-logger.
+description:    Please see the README on GitHub at <https://github.com/mbg/logstash#readme>
+category:       System
+homepage:       https://github.com/mbg/logstash#readme
+bug-reports:    https://github.com/mbg/logstash/issues
+author:         Michael B. Gale
+maintainer:     github@michael-gale.co.uk
+copyright:      Copyright (c) 2021 Michael B. Gale
+license:        MIT
+license-file:   LICENSE
+build-type:     Simple
 extra-source-files:
     README.md
     ChangeLog.md
 
 source-repository head
-    type:     git
-    location: https://github.com/mbg/logstash
+  type: git
+  location: https://github.com/mbg/logstash
 
 library
-    exposed-modules:    Control.Monad.Logger.Logstash
-    hs-source-dirs:     src
-    other-modules:      Paths_monad_logger_logstash
-    default-language:   Haskell2010
-    default-extensions: RecordWildCards OverloadedStrings
-    build-depends:
-        aeson <1.6,
-        base >=4.7 && <5,
-        logstash <0.2,
-        monad-logger <0.4,
-        retry <0.9,
-        stm <2.6,
-        stm-chans <3.1,
-        text <1.3,
-        transformers <0.6,
-        unliftio <0.3
+  exposed-modules:
+      Control.Monad.Logger.Logstash
+  other-modules:
+      Paths_monad_logger_logstash
+  hs-source-dirs:
+      src
+  default-extensions:
+      RecordWildCards
+      OverloadedStrings
+  build-depends:
+      aeson
+    , base >=4.7 && <5
+    , logstash
+    , monad-logger
+    , retry
+    , stm
+    , stm-chans
+    , text
+    , transformers
+    , unliftio
+  default-language: Haskell2010