diff --git a/monad-logger.cabal b/monad-logger.cabal
--- a/monad-logger.cabal
+++ b/monad-logger.cabal
@@ -1,5 +1,5 @@
 name:                monad-logger
-version:             0.3.3.0
+version:             0.3.3.1
 synopsis:            A class of monads which can log messages.
 description:         This package uses template-haskell for determining source code locations of messages.
 homepage:            https://github.com/kazu-yamamoto/logger
@@ -23,7 +23,7 @@
                      , lifted-base
                      , resourcet          >= 0.4       && < 0.5
                      , conduit            >= 1.0       && < 1.1
-                     , fast-logger        >= 0.2       && < 2.1
+                     , fast-logger        >= 2.0       && < 2.1
                      , transformers-base
                      , monad-control
                      , monad-loops