diff --git a/postgrest.cabal b/postgrest.cabal
index 83c86742b..5b2e94623 100644
--- a/postgrest.cabal
+++ b/postgrest.cabal
@@ -70,7 +70,7 @@ library
                      , lens
                      , lens-aeson
                      , network-uri
-                     , optparse-applicative >= 0.12.0.0 && < 0.13.0.0
+                     , optparse-applicative >= 0.13 && < 0.14
                      , parsec
                      , protolude
                      , Ranged-sets == 0.3.0
diff --git a/src/PostgREST/Config.hs b/src/PostgREST/Config.hs
index dd29075f9..ca0948d45 100644
--- a/src/PostgREST/Config.hs
+++ b/src/PostgREST/Config.hs
@@ -29,6 +29,7 @@ import qualified Data.CaseInsensitive        as CI
 import qualified Data.Configurator           as C
 import qualified Data.Configurator.Types     as C
 import           Data.List                   (lookup)
+import           Data.Monoid
 import           Data.Text                   (strip, intercalate, lines)
 import           Data.Text.Encoding          (encodeUtf8)
 import           Data.Text.IO                (hPutStrLn)
diff --git a/stack.yaml b/stack.yaml
index 2f2b5528e..a67cf7b00 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -3,6 +3,7 @@ extra-deps:
   - Ranged-sets-0.3.0
   - hasql-pool-0.4.1
   - hasql-transaction-0.5
+  - optparse-applicative-0.13.0.0
 ghc-options:
   postgrest: -O2 -Werror -Wall -fwarn-identities -fno-warn-redundant-constraints
 nix: