diff --git a/AddHandler.hs b/AddHandler.hs
--- a/AddHandler.hs
+++ b/AddHandler.hs
@@ -62,18 +62,18 @@
 addHandlerInteractive = do
     cabal <- getCabal
     let routeInput = do
-        putStr "Name of route (without trailing R): "
-        hFlush stdout
-        name <- getLine
-        checked <- checkRoute name cabal
-        case checked of
-            Left err@EmptyRoute -> (error . show) err
-            Left err@RouteCaseError -> print err >> routeInput
-            Left err@(RouteExists _) -> do
-              print err
-              putStrLn "Try another name or leave blank to exit"
-              routeInput
-            Right p -> return p
+          putStr "Name of route (without trailing R): "
+          hFlush stdout
+          name <- getLine
+          checked <- checkRoute name cabal
+          case checked of
+              Left err@EmptyRoute -> (error . show) err
+              Left err@RouteCaseError -> print err >> routeInput
+              Left err@(RouteExists _) -> do
+                print err
+                putStrLn "Try another name or leave blank to exit"
+                routeInput
+              Right p -> return p
 
     routePair <- routeInput
     putStr "Enter route pattern (ex: /entry/#EntryId): "
diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,9 @@
+# ChangeLog for yesod-bin
+
+## 1.6.0.5
+
+* Use process groups to ensure GHC is killed on Ctrl-C [#1683](https://github.com/yesodweb/yesod/pull/1683)
+
 ## 1.6.0.4
 
 * Support Cabal 3.0
diff --git a/Devel.hs b/Devel.hs
--- a/Devel.hs
+++ b/Devel.hs
@@ -345,7 +345,8 @@
         myPath <- getExecutablePath
         let procConfig = setStdout createSource
                        $ setStderr createSource
-                       $ setDelegateCtlc True $ proc "stack" $
+                       $ setCreateGroup True -- because need when yesod-bin killed and kill child ghc
+                       $ proc "stack" $
                 [ "build"
                 , "--fast"
                 , "--file-watch"
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -83,6 +83,7 @@
   `yesod devel` also writes to a file
   `yesod-devel/devel-terminate`. Your devel script should respect this
   file and shutdown whenever it exists.
+  (It may be fixed in 1.6.0.5.)
 * If your .cabal file defines them, `yesod devel` will tell Stack to
   build with the flags `dev` and `library-only`. You can use this to
   speed up compile times (biggest win: skip building executables, thus
diff --git a/yesod-bin.cabal b/yesod-bin.cabal
--- a/yesod-bin.cabal
+++ b/yesod-bin.cabal
@@ -1,5 +1,5 @@
 name:            yesod-bin
-version:         1.6.0.4
+version:         1.6.0.5
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -8,7 +8,7 @@
 description:     See README.md for more information
 category:        Web, Yesod
 stability:       Stable
-cabal-version:   >= 1.6
+cabal-version:   >= 1.10
 build-type:      Simple
 homepage:        http://www.yesodweb.com/
 
@@ -19,12 +19,13 @@
   *.pem
 
 executable             yesod
+    default-language: Haskell2010
     if os(windows)
         cpp-options:     -DWINDOWS
     if os(openbsd)
         ld-options:      -Wl,-zwxneeded
 
-    build-depends:     base               >= 4.3          && < 5
+    build-depends:     base               >= 4.10         && < 5
                      , Cabal              >= 1.18
                      , bytestring         >= 0.9.1.4
                      , conduit            >= 1.3