diff --git a/default.nix b/default.nix
index a8e072cb..a3c04ac8 100644
--- a/default.nix
+++ b/default.nix
@@ -10,7 +10,9 @@ let
   ghc = pkgs.haskell.packages.${compiler}.override { inherit overrides; };
   language-ecmascript = ghc.callCabal2nix "language-ecmascript" ./. {};
 in
+with pkgs.haskell.lib;
 {
   inherit language-ecmascript;
   inherit pkgs;
+  release = sdistTarball language-ecmascript;
 }
diff --git a/language-ecmascript.cabal b/language-ecmascript.cabal
index ab8218de..0eadac86 100644
--- a/language-ecmascript.cabal
+++ b/language-ecmascript.cabal
@@ -1,5 +1,5 @@
 Name:           language-ecmascript
-Version:        0.19.0.1
+Version:        0.19.1.0
 Cabal-Version:	>= 1.12
 Copyright:      (c) 2007-2012 Brown University, (c) 2008-2010 Claudiu Saftoiu,
                 (c) 2012-2015 Stevens Institute of Technology, (c) 2016 Eyal Lotem, (c) 2016-2020 Andrey Chudnov