diff --git a/hledger-api/hledger-api.hs b/hledger-api/hledger-api.hs
index 7f56184a2..ae6b1a5bb 100644
--- a/hledger-api/hledger-api.hs
+++ b/hledger-api/hledger-api.hs
@@ -33,7 +33,7 @@ import           Text.Printf
 import Hledger.Query
 import Hledger.Cli hiding (Reader, version)
 
-version="0.27.98"
+hledgerApiVersion="0.27.98"
 
 -- https://github.com/docopt/docopt.hs#readme
 doc :: Docopt
@@ -62,16 +62,16 @@ Options:
 
 swaggerSpec :: Swagger
 swaggerSpec = toSwagger (Proxy :: Proxy HledgerApi)
-  & info.infoTitle   .~ "hledger API"
-  & info.infoVersion .~ pack version
-  & info.infoDescription .~ Just "This is the API provided by hledger-api for reading hledger data"
-  & info.infoLicense .~ Just (License "GPLv3+" (Nothing))
+  & info.title       .~ "hledger API"
+  & info.version     .~ pack hledgerApiVersion
+  & info.description .~ Just "This is the API provided by hledger-api for reading hledger data"
+  & info.license     .~ Just (License "GPLv3+" (Nothing))
 
 main :: IO ()
 main = do
   args <- getArgs >>= parseArgsOrExit doc
   when (isPresent args (longOption "help")) $ exitWithUsage doc
-  when (isPresent args (longOption "version")) $ putStrLn version >> exitSuccess
+  when (isPresent args (longOption "version")) $ putStrLn hledgerApiVersion >> exitSuccess
   when (isPresent args (longOption "swagger")) $ BL8.putStrLn (encode swaggerSpec) >> exitSuccess
   let defp = "8001"
   p <- case readMay $ getArgWithDefault args defp (longOption "port") of
@@ -186,17 +186,15 @@ instance ToJSON Account where
     ,"aparentname"  .= toJSON (maybe "" aname $ aparent a)
     ,"asubs"        .= toJSON (map toJSON $ asubs a)
     ]
-instance ToJSON AccountTransactionsReport where toJSON = genericToJSON defaultOptions
-
 instance ToSchema ClearedStatus
 instance ToSchema GenericSourcePos
 instance ToSchema Decimal
  where
-  declareNamedSchema _proxy = pure (Just "Decimal", schema)
+  declareNamedSchema _proxy = pure $ NamedSchema (Just "Decimal") schema
    where
      schema = mempty
-       & schemaType .~ SwaggerNumber
-       & schemaExample .~ Just (toJSON (100 :: Decimal))
+       & type_   .~ SwaggerNumber
+       & example .~ Just (toJSON (100 :: Decimal))
 instance ToSchema Amount
 instance ToSchema AmountStyle
 instance ToSchema Side
diff --git a/stack.yaml b/stack.yaml
index 223da3a69..26b136772 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -9,10 +9,12 @@ packages:
 
 #flags:
 
-resolver: lts-4.2  # or newer
+# this or a newer snapshot is suggested
+#resolver: lts-5.11
+# hledger-api/servant/aeson requires > lts-5
+resolver: nightly-2016-04-01
 
-extra-deps:
-- servant-swagger-0.1
+#extra-deps:
 
 # ghc-options:
 #   rtsopts: