diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## Version 0.0.3 (2018-12-27)
+
+- Add support for GHC 8.6.3
+- Remove dependency on `unliftio-core` to fix compatibility issue
+  with un-released version of amazonka
+
 ## Version 0.0.2 (2018-12-27)
 
 - Fix missing `Real` from `mismi-p`
diff --git a/mismi-core.cabal b/mismi-core.cabal
--- a/mismi-core.cabal
+++ b/mismi-core.cabal
@@ -1,4 +1,4 @@
-version: 0.0.2
+version: 0.0.3
 
 name:
   mismi-core
@@ -30,21 +30,22 @@
 tested-with:
     GHC == 8.2.2
   , GHC == 8.4.3
+  , GHC == 8.6.3
 extra-source-files:
   CHANGELOG.md
 
 library
   build-depends:
       base                            >= 3          && < 5
-    , mismi-kernel                    == 0.0.2.*
-    , mismi-p                         == 0.0.2.*
+    , mismi-kernel                    == 0.0.3.*
+    , mismi-p                         == 0.0.3.*
     , amazonka                        >= 1.5        && < 1.7
     , amazonka-core                   >= 1.5        && < 1.7
     , bytestring                      >= 0.10       && < 0.11
     , exceptions                      >= 0.7        && < 0.11
     , http-client                     >= 0.4.18     && < 0.6
     , http-types                      >= 0.9        && < 0.13
-    , lens                            >= 4.8        && < 4.17
+    , lens                            >= 4.8        && < 4.18
     , mtl                             >= 2.1        && < 2.3
     , resourcet                       >= 1.1        && < 1.3
     , retry                           == 0.7.*
@@ -88,7 +89,7 @@
   build-depends:
       base
     , mismi-core
-    , mismi-p                         == 0.0.2.*
+    , mismi-p                         == 0.0.3.*
     , mmorph                          >= 1.0        && < 1.2
     , amazonka-core                   >= 1.5        && < 1.7
     , hedgehog
@@ -117,8 +118,8 @@
   build-depends:
       base
     , mismi-core
-    , mismi-core-test                 == 0.0.2.*
-    , mismi-p                         == 0.0.2.*
+    , mismi-core-test                 == 0.0.3.*
+    , mismi-p                         == 0.0.3.*
     , mmorph                          >= 1.0        && < 1.2
     , amazonka-core                   >= 1.5        && < 1.7
     , hedgehog
diff --git a/src/Mismi/Control.hs b/src/Mismi/Control.hs
--- a/src/Mismi/Control.hs
+++ b/src/Mismi/Control.hs
@@ -35,6 +35,8 @@
   , withRetriesOf
   , throwOrRetry
   , throwOrRetryOf
+  -- * Timeout
+  , timeoutAWS
   ) where
 
 import           Control.Exception (IOException)
@@ -67,6 +69,8 @@
 
 import           P
 
+import qualified System.Timeout as System
+
 runAWST :: Env -> (Error -> e) -> ExceptT e AWS a -> ExceptT e IO a
 runAWST e err action =
   runAWSTWith (runAWS e) err action
@@ -353,3 +357,9 @@
         throwM e
       TransportError _ ->
         throwM e
+
+
+timeoutAWS :: Int -> AWS a -> AWS (Maybe a)
+timeoutAWS i r = do
+  e <- ask
+  liftIO $ System.timeout i (unsafeRunAWS e r)