diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,8 @@
 # ChangeLog for resourcet
 
+## 1.2.5
+
+* Support `transformers-0.6` / `mtl-2.3`
 
 ## 1.2.4.3
 
diff --git a/Control/Monad/Trans/Resource/Internal.hs b/Control/Monad/Trans/Resource/Internal.hs
--- a/Control/Monad/Trans/Resource/Internal.hs
+++ b/Control/Monad/Trans/Resource/Internal.hs
@@ -40,7 +40,9 @@
 import Control.Monad.Writer.Class ( MonadWriter (..) )
 
 import Control.Monad.Trans.Identity ( IdentityT)
+#if !MIN_VERSION_transformers(0,6,0)
 import Control.Monad.Trans.List     ( ListT    )
+#endif
 import Control.Monad.Trans.Maybe    ( MaybeT   )
 import Control.Monad.Trans.Except   ( ExceptT  )
 import Control.Monad.Trans.Reader   ( ReaderT  )
@@ -267,7 +269,9 @@
 #define GO(T) instance (MonadResource m) => MonadResource (T m) where liftResourceT = lift . liftResourceT
 #define GOX(X, T) instance (X, MonadResource m) => MonadResource (T m) where liftResourceT = lift . liftResourceT
 GO(IdentityT)
+#if !MIN_VERSION_transformers(0,6,0)
 GO(ListT)
+#endif
 GO(MaybeT)
 GO(ExceptT e)
 GO(ReaderT r)
diff --git a/resourcet.cabal b/resourcet.cabal
--- a/resourcet.cabal
+++ b/resourcet.cabal
@@ -1,5 +1,5 @@
 Name:                resourcet
-Version:             1.2.4.3
+Version:             1.2.5
 Synopsis:            Deterministic allocation and freeing of scarce resources.
 description:         Hackage documentation generation is not reliable. For up to date documentation, please see: <http://www.stackage.org/package/resourcet>.
 License:             BSD3
@@ -19,12 +19,12 @@
                        Data.Acquire
                        Data.Acquire.Internal
                        UnliftIO.Resource
-  Build-depends:       base                     >= 4.9          && < 5
+  Build-depends:       base                     >= 4.12         && < 5
                      , containers
                      , transformers             >= 0.4
-                     , mtl                      >= 2.0          && < 2.3
+                     , mtl                      >= 2.0          && < 2.4
                      , exceptions               (== 0.8.* || == 0.10.*)
-                     , unliftio-core
+                     , unliftio-core >= 0.1.1.0
                      , primitive
   ghc-options:     -Wall