diff --git a/pkgs/development/libraries/haskell/bytestring-lexing/default.nix b/pkgs/development/libraries/haskell/bytestring-lexing/default.nix
index d67c9907f99..05b316f2412 100644
--- a/pkgs/development/libraries/haskell/bytestring-lexing/default.nix
+++ b/pkgs/development/libraries/haskell/bytestring-lexing/default.nix
@@ -2,12 +2,12 @@
 
 cabal.mkDerivation (self: {
   pname = "bytestring-lexing";
-  version = "0.3.0";
-  sha256 = "1jrhmljy7m84imcmvsarv74i3hcm60ja9pl1ww3lm0zgi0rrddqd";
+  version = "0.4.0";
+  sha256 = "1lww38rab9k8drndqkg306kiq6663i89sq6l1bvjv6cs13acc8wr";
   buildTools = [ alex ];
   meta = {
     homepage = "http://code.haskell.org/~wren/";
-    description = "Parse literals efficiently from strict or lazy bytestrings";
+    description = "Parse and produce literals efficiently from strict or lazy bytestrings";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
     maintainers = [