diff --git a/cabal.project b/cabal.project
index cef0ddf9..18fdd695 100644
--- a/cabal.project
+++ b/cabal.project
@@ -13,5 +13,4 @@ source-repository-package
 source-repository-package
   type: git
   location: https://github.com/hamler-lang/purescript.git
-  tag: dbc46627e6c15aa57ebc9c69c6abe3c6d77edf3a
-
+  tag: 6abdbe4c1c0a180870ba1f433e4de80c2cee73e4
diff --git a/hamler.cabal b/hamler.cabal
index 32c9bd62..3f9d7da9 100644
--- a/hamler.cabal
+++ b/hamler.cabal
@@ -7,7 +7,7 @@ cabal-version: 1.12
 -- hash: 730f833508fdf0326f4bf2001421a3ae4b607c5474cfb2ed524b8a08d4ba20cf
 
 name:           hamler
-version:        0.3
+version:        0.4
 synopsis:       The Hamler Programming Language
 description:    Hamler is a functional programming language inspired by Haskell and Standard ML, that compiles to CoreErlang.
 category:       Language, Compiler