diff --git a/lackey.cabal b/lackey.cabal
--- a/lackey.cabal
+++ b/lackey.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: ced7bfd2f3dd360c96251ecbaa1fb70717d493b79c43b776714920907629b233
+-- hash: f340cdd499e0cb9f053c571993ee429b86b180791a0e7a9bc2c0fb9a02a6b2d4
 
 name:           lackey
-version:        1.0.9
+version:        1.0.10
 synopsis:       Generate Ruby clients from Servant APIs.
 description:    Lackey generates Ruby clients from Servant APIs.
 category:       Web
@@ -36,7 +36,7 @@
       library
   ghc-options: -Weverything -Wno-implicit-prelude -Wno-safe -Wno-unsafe
   build-depends:
-      base >=4.9.0 && <4.13
+      base >=4.9.0 && <4.14
     , servant >=0.8.1 && <0.17
     , servant-foreign >=0.8.1 && <0.16
     , text >=1.2.2 && <1.3
@@ -51,7 +51,7 @@
       tests
   ghc-options: -Weverything -Wno-implicit-prelude -Wno-safe -Wno-unsafe -rtsopts -threaded
   build-depends:
-      base >=4.9.0 && <4.13
+      base >=4.9.0 && <4.14
     , hspec >=2.2.3 && <2.8
     , lackey
     , servant >=0.8.1 && <0.17
diff --git a/library/Lackey.hs b/library/Lackey.hs
--- a/library/Lackey.hs
+++ b/library/Lackey.hs
@@ -8,7 +8,6 @@
 import qualified Data.Char as Char
 import Data.Function ((&))
 import qualified Data.Maybe as Maybe
-import Data.Monoid ((<>))
 import qualified Data.Proxy as Proxy
 import qualified Data.Text as Text
 import qualified Data.Text.Encoding as Text
diff --git a/package.yaml b/package.yaml
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name: lackey
-version: 1.0.9
+version: 1.0.10
 
 category: Web
 description: Lackey generates Ruby clients from Servant APIs.
@@ -15,7 +15,7 @@
 synopsis: Generate Ruby clients from Servant APIs.
 
 dependencies:
-  base: '>= 4.9.0 && < 4.13'
+  base: '>= 4.9.0 && < 4.14'
   servant: '>= 0.8.1 && < 0.17'
   servant-foreign: '>= 0.8.1 && < 0.16'
   text: '>= 1.2.2 && < 1.3'