diff --git a/licensor.cabal b/licensor.cabal
index c3b56c9..72a0083 100644
--- a/licensor.cabal
+++ b/licensor.cabal
@@ -39,7 +39,7 @@ library
     , Cabal >= 1.22 && < 2.1
     , containers
     , directory
-    , http-conduit >= 2.1 && < 2.3
+    , http-conduit >= 2.1 && < 2.4
     , process
   default-language:
       Haskell2010
diff --git a/src/Licensor.hs b/src/Licensor.hs
index 00ac626..85e56c1 100644
--- a/src/Licensor.hs
+++ b/src/Licensor.hs
@@ -51,8 +51,7 @@ import qualified Data.Set as Set
 import System.Directory
 
 -- http-conduit
---import Network.HTTP.Client.Conduit
-import Network.HTTP.Simple
+import Network.HTTP.Simple (HttpException, getResponseBody, httpLBS, parseRequest)
 
 -- licensor
 import qualified Paths_licensor
diff --git a/stack.yaml b/stack.yaml
index 8b921c4..f224f8d 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1 +1 @@
-resolver: lts-7.0
+resolver: nightly-2018-01-16