diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 0.2.0.4
+Updated to simple-effects-0.12.0.0
+
 # 0.2.0.3
 Updated to simple-effects-0.10.0.0
 
diff --git a/simple-logging.cabal b/simple-logging.cabal
--- a/simple-logging.cabal
+++ b/simple-logging.cabal
@@ -1,5 +1,5 @@
 name:                simple-logging
-version:             0.2.0.3
+version:             0.2.0.4
 synopsis:            Logging effect to plug into the simple-effects framework
 homepage:            https://gitlab.com/haskell-hr/logging
 license:             MIT
@@ -23,7 +23,7 @@
                      , bytestring
                      , iso8601-time
                      , text
-                     , simple-effects >= 0.10.0.0
+                     , simple-effects >= 0.12.0.0
                      , exceptions
                      , mtl
                      , string-conv
diff --git a/src/Control/Effects/Logging.hs b/src/Control/Effects/Logging.hs
--- a/src/Control/Effects/Logging.hs
+++ b/src/Control/Effects/Logging.hs
@@ -2,7 +2,7 @@
            , RecordWildCards #-}
 {-# LANGUAGE GADTs, DataKinds #-}
 {-# LANGUAGE DeriveGeneric #-}
-{-# LANGUAGE NoMonomorphismRestriction #-}
+{-# LANGUAGE NoMonomorphismRestriction, DeriveAnyClass #-}
 -- | Use this module to add logging to your monad.
 --   A log is a structured value that can hold information like severity, log message, timestamp,
 --   callstack, etc.
@@ -38,11 +38,9 @@
 import Data.Void
 
 -- | The logging effect.
-data Logging
-instance Effect Logging where
-    data EffMethods Logging m = LoggingMethods
-        { _logEffect :: Log -> m () }
-        deriving (Generic)
+newtype Logging m = LoggingMethods
+    { _logEffect :: Log -> m () }
+    deriving (Generic, Effect)
 
 -- | Send a single log into the stream.
 logEffect :: MonadEffect Logging m => Log -> m ()