diff --git a/Options.hs b/Options.hs
--- a/Options.hs
+++ b/Options.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE PatternGuards       #-}
 {-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE CPP                 #-}
 
 module Options (injectDefaults) where
 
@@ -69,8 +70,13 @@
            let (Just parseri) = f cmd
            in  parseri { infoParser = injectDefaultP env (path ++ [normalizeName cmd]) (infoParser parseri) }
      in  OptP (Option (CmdReader cmds (`M.lookup` cmdMap)) props)
+#if MIN_VERSION_optparse_applicative(0, 5, 0)
+  | (Option (OptReader names (CReader _ rdr) _) _) <- o =
+     p <|> either (const empty) pure (msum $ map (rdr <=< (maybe (Left $ ErrorMsg "Missing environment variable") Right . getEnvValue env path)) names)
+#else
   | (Option (OptReader names (CReader _ rdr)) _) <- o =
      p <|> maybe empty pure (msum $ map (rdr <=< getEnvValue env path) names)
+#endif
   | (Option (FlagReader names a) _) <- o =
      p <|> if any ((==Just "1") . getEnvValue env path) names then pure a else empty
   | otherwise = p
diff --git a/main.hs b/main.hs
--- a/main.hs
+++ b/main.hs
@@ -17,6 +17,10 @@
 import qualified Paths_yesod
 import           Scaffolding.Scaffolder
 
+#if MIN_VERSION_optparse_applicative(0, 5, 0)
+import           Options.Applicative.Builder.Internal (Mod, OptionFields)
+#endif
+
 #ifndef WINDOWS
 import           Build                  (touch)
 
@@ -156,7 +160,14 @@
 
 -- | Optional @String@ argument
 optStr :: Mod OptionFields (Maybe String) -> Parser (Maybe String)
-optStr m = nullOption $ value Nothing <> reader (Just . str)  <> m
+optStr m =
+    nullOption $ value Nothing <> reader (success . str)  <> m
+  where
+#if MIN_VERSION_optparse_applicative(0, 5, 0)
+    success = Right
+#else
+    success = Just
+#endif
 
 -- | Like @rawSystem@, but exits if it receives a non-success result.
 rawSystem' :: String -> [String] -> IO ()
diff --git a/yesod.cabal b/yesod.cabal
--- a/yesod.cabal
+++ b/yesod.cabal
@@ -1,5 +1,5 @@
 name:            yesod
-version:         1.1.7
+version:         1.1.7.1
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -97,7 +97,7 @@
                      , system-fileio      >= 0.3          && < 0.4
                      , unordered-containers
                      , yaml               >= 0.8          && < 0.9
-                     , optparse-applicative >= 0.4        && < 0.5
+                     , optparse-applicative >= 0.4
                      , fsnotify           >= 0.0          && < 0.1
                      , split              >= 0.2          && < 0.3
                      , file-embed