diff --git a/moffy-samples-events.cabal b/moffy-samples-events.cabal
--- a/moffy-samples-events.cabal
+++ b/moffy-samples-events.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           moffy-samples-events
-version:        0.2.2.4
+version:        0.2.2.5
 synopsis:       Events for sample codes of moffy
 description:    Please see the README on GitHub at <https://github.com/YoshikuniJujo/moffy-samples-events#readme>
 category:       Control
@@ -64,7 +64,7 @@
     , deepseq
     , http-conduit
     , moffy
-    , monads-tf
+    , mtl
     , process
     , random
     , stm
@@ -95,7 +95,7 @@
     , http-conduit
     , moffy
     , moffy-samples-events
-    , monads-tf
+    , mtl
     , process
     , random
     , stm