diff --git a/hledger-ui/Hledger/UI/Main.hs b/hledger-ui/Hledger/UI/Main.hs
index 038cd063e..59fa50470 100644
--- a/hledger-ui/Hledger/UI/Main.hs
+++ b/hledger-ui/Hledger/UI/Main.hs
@@ -16,7 +16,9 @@ import Control.Concurrent (threadDelay)
 import Control.Concurrent.Async
 import Control.Monad
 -- import Control.Monad.IO.Class (liftIO)
+#if !MIN_VERSION_vty(0,15,0)
 import Data.Default (def)
+#endif
 -- import Data.Monoid              --
 import Data.List
 import Data.Maybe
diff --git a/hledger-ui/package.yaml b/hledger-ui/package.yaml
index f3972c6ff..0d3800cd2 100644
--- a/hledger-ui/package.yaml
+++ b/hledger-ui/package.yaml
@@ -88,8 +88,8 @@ executables:
           buildable: false
         else:
           dependencies:
-            - brick >= 0.12 && < 0.17
-            - vty >= 5.5 && < 5.15
+            - brick >= 0.12 && < 0.18
+            - vty >= 5.5 && < 5.16
       - condition: flag(threaded)
         ghc-options: -threaded
       - condition: flag(oldtime)