2 files changed, 2 insertions, 1 deletions
diff --git a/Parser.hs b/Parser.hs
index fd5adcb..27f4f59 100644
--- a/Parser.hs
+++ b/Parser.hs
@@ -7,6 +7,7 @@
 {-# LANGUAGE StandaloneDeriving #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE TypeOperators #-}
 module Parser (
   parse,
   printErrMsg,
diff --git a/hs-visinter.cabal b/hs-visinter.cabal
index 9c5e18d..7bc98d1 100644
--- a/hs-visinter.cabal
+++ b/hs-visinter.cabal
@@ -13,7 +13,7 @@ executable hs-visinter
     AST
     Parser
   build-depends:
-    base >= 4.16 && < 4.17,
+    base >= 4.16 && < 4.19,
     containers >= 0.6.3.1 && < 0.7,
     parsec >= 3.1.14.0 && < 3.2,
     mtl,