diff --git a/aws-lambda-runtime.cabal b/aws-lambda-runtime.cabal
--- a/aws-lambda-runtime.cabal
+++ b/aws-lambda-runtime.cabal
@@ -1,9 +1,8 @@
-cabal-version:       2.2
-name:                aws-lambda-runtime
-version:             0
-
-synopsis: Haskell on AWS Lambda Runtime API
-category: AWS, Development
+cabal-version: 2.2
+name:          aws-lambda-runtime
+version:       0.0.0.1
+synopsis:      Haskell on AWS Lambda Runtime API
+category:      AWS, Development
 description:
   Make "native" Haskell AWS Lambda (using Runtime API).
   .
@@ -11,15 +10,14 @@
   .
   * "AWS.Lambda.RuntimeAPI.Package" is for packaging them.
 
-homepage:     https://github.com/phadej/aws-lambda-haskell-runtime
-bug-reports:  https://github.com/phadej/aws-lambda-haskell-runtime/issues
-license:      Apache-2.0
-license-file: LICENSE
-author:       Oleg Grenrus <oleg.grenrus@iki.fi>
-maintainer:   Oleg Grenrus <oleg.grenrus@iki.fi>
-copyright:    (c) 2018 Futurice, 2018 Oleg Grenrus
-
-tested-with:  GHC ==8.2.2 || ==8.4.4 || ==8.6.2
+homepage:      https://github.com/phadej/aws-lambda-haskell-runtime
+bug-reports:   https://github.com/phadej/aws-lambda-haskell-runtime/issues
+license:       Apache-2.0
+license-file:  LICENSE
+author:        Oleg Grenrus <oleg.grenrus@iki.fi>
+maintainer:    Oleg Grenrus <oleg.grenrus@iki.fi>
+copyright:     (c) 2018 Futurice, 2018 Oleg Grenrus
+tested-with:   GHC ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.1
 
 source-repository head
   type:     git
@@ -35,28 +33,28 @@
 
   -- GHC boot libraries
   build-depends:
-    , base              ^>=4.10.1.0 || ^>=4.11.1.0 || ^>=4.12.0.0
-    , bytestring        ^>=0.10.8.2
-    , containers        ^>=0.5.10.2 || ^>= 0.6.0.1
-    , deepseq           ^>=1.4.3.0
-    , text              ^>=1.2.3.0
-    , time              ^>=1.8.0.2
+    , base        ^>=4.10.1.0 || ^>=4.11.1.0 || ^>=4.12.0.0 || ^>=4.13.0.0
+    , bytestring  ^>=0.10.8.2
+    , containers  ^>=0.5.10.2 || ^>=0.6.0.1
+    , deepseq     ^>=1.4.3.0
+    , text        ^>=1.2.3.0
 
   -- other dependencies
   build-depends:
-    , aeson             ^>=1.4.2.0
-    , async             ^>=2.2.1
-    , base-compat       ^>=0.10.5
-    , http-client       ^>=0.5.14
-    , http-media        ^>=0.7.1.3
-    , http-types        ^>=0.12.2
+    , aeson        ^>=1.4.2.0
+    , async        ^>=2.2.1
+    , base-compat  ^>=0.11.0
+    , http-client  ^>=0.6.4
+    , http-media   ^>=0.8.0.0
+    , http-types   ^>=0.12.2
+    , time-compat  ^>=1.9.2.2
 
   -- for Package
   build-depends:
-    , filepath    ^>=1.4.1.2
-    , parsec      ^>=3.1.13.0
-    , process     ^>=1.6.1.0
-    , zip-archive ^>=0.4
+    , filepath     ^>=1.4.1.2
+    , parsec       ^>=3.1.13.0
+    , process      ^>=1.6.1.0
+    , zip-archive  ^>=0.4
 
 executable example-lambda
   ghc-options:      -Wall
@@ -66,12 +64,12 @@
 
   -- inherited dependencies
   build-depends:
-    , base
     , aeson
     , aws-lambda-runtime
+    , base
     , text
 
   -- additional dependencies
   build-depends:
-    , lens        ^>=4.17
-    , lens-aeson  ^>=1.0.2
+    , lens        ^>=4.18
+    , lens-aeson  ^>=1.1
diff --git a/src/AWS/Lambda/RuntimeAPI.hs b/src/AWS/Lambda/RuntimeAPI.hs
--- a/src/AWS/Lambda/RuntimeAPI.hs
+++ b/src/AWS/Lambda/RuntimeAPI.hs
@@ -39,16 +39,16 @@
 import System.Environment       (lookupEnv)
 import System.IO                (hFlush, stdout)
 
-import qualified Data.Aeson             as Aeson
-import qualified Data.ByteString        as BS
-import qualified Data.ByteString.Char8  as BS8
-import qualified Data.ByteString.Lazy   as LBS
-import qualified Data.Map.Strict        as Map
-import qualified Data.Text              as Text
-import qualified Data.Time.Clock.System as Time
-import qualified Network.HTTP.Client    as H
-import qualified Network.HTTP.Media     as HTTP
-import qualified Network.HTTP.Types     as HTTP
+import qualified Data.Aeson                    as Aeson
+import qualified Data.ByteString               as BS
+import qualified Data.ByteString.Char8         as BS8
+import qualified Data.ByteString.Lazy          as LBS
+import qualified Data.Map.Strict               as Map
+import qualified Data.Text                     as Text
+import qualified Data.Time.Clock.System.Compat as Time
+import qualified Network.HTTP.Client           as H
+import qualified Network.HTTP.Media            as HTTP
+import qualified Network.HTTP.Types            as HTTP
 
 -------------------------------------------------------------------------------
 -- Types
