diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 ## Unreleased
 
+## 0.1.1.1 -- 2020-03-20
+
+* Fix ambiguous import of `lines`
+* Improve base version constraint
+* Fix warnings
+
 ## 0.1.1.0 -- 2020-03-19
 
 * Support Nixpkgs 20.03
diff --git a/arion-compose.cabal b/arion-compose.cabal
--- a/arion-compose.cabal
+++ b/arion-compose.cabal
@@ -1,7 +1,7 @@
 cabal-version:       2.4
 
 name:                arion-compose
-version: 0.1.1.0
+version: 0.1.1.1
 synopsis:            Run docker-compose with help from Nix/NixOS
 description:         Arion is a tool for building and running applications that consist of multiple docker containers using NixOS modules. It has special support for docker images that are built with Nix, for a smooth development experience and improved performance.
 homepage:            https://github.com/hercules-ci/arion#readme
@@ -25,7 +25,7 @@
 data-dir:            src
 
 common common
-  build-depends:     base ^>=4.12.0.0
+  build-depends:     base >=4.12.0.0 && <4.14
                    , aeson
                    , aeson-pretty
                    , async
@@ -36,7 +36,7 @@
                    , process
                    , temporary
                    , text
-                   , protolude
+                   , protolude >= 0.2
                    , unix
   ghc-options:     -Wall
 
diff --git a/src/haskell/exe/Main.hs b/src/haskell/exe/Main.hs
--- a/src/haskell/exe/Main.hs
+++ b/src/haskell/exe/Main.hs
@@ -17,8 +17,6 @@
 import qualified Data.Text as T
 import qualified Data.Text.IO as T
 
-import Data.List.NonEmpty (NonEmpty(..))
-
 import System.Posix.User (getRealUserID)
 
 data CommonOptions =
diff --git a/src/haskell/lib/Arion/Images.hs b/src/haskell/lib/Arion/Images.hs
--- a/src/haskell/lib/Arion/Images.hs
+++ b/src/haskell/lib/Arion/Images.hs
@@ -11,10 +11,10 @@
 import qualified Data.Aeson as Aeson
 import           Arion.Aeson (decodeFile)
 import qualified System.Process as Process
+import qualified Data.Text as T
 
 import Control.Lens
 import Data.Aeson.Lens
-import Data.String
 import System.IO (withFile, IOMode(ReadMode))
 
 
@@ -57,4 +57,4 @@
 dockerImages :: IO [TaggedImage]
 dockerImages = do
   let procSpec = Process.proc "docker" [ "images",  "--filter", "dangling=false", "--format", "{{.Repository}}:{{.Tag}}" ]
-  (map toS . lines) <$> Process.readCreateProcess procSpec ""
+  (map toS . T.lines . toS) <$> Process.readCreateProcess procSpec ""
diff --git a/src/haskell/lib/Arion/Nix.hs b/src/haskell/lib/Arion/Nix.hs
--- a/src/haskell/lib/Arion/Nix.hs
+++ b/src/haskell/lib/Arion/Nix.hs
@@ -22,7 +22,6 @@
 import qualified Data.Text.IO                  as T
 
 import qualified Data.List.NonEmpty            as NE
-import           Data.List.NonEmpty             ( NonEmpty(..) )
 
 import           Control.Arrow                  ( (>>>) )
 import           System.IO.Temp                 ( withTempFile )