diff --git a/pkgs/by-name/re/re2c/package.nix b/pkgs/by-name/re/re2c/package.nix
index bc7ee4beba24..5442dd079c5a 100644
--- a/pkgs/by-name/re/re2c/package.nix
+++ b/pkgs/by-name/re/re2c/package.nix
@@ -14,13 +14,13 @@
 
 stdenv.mkDerivation rec {
   pname = "re2c";
-  version = "4.1";
+  version = "4.2";
 
   src = fetchFromGitHub {
     owner = "skvadrik";
     repo = "re2c";
     rev = version;
-    sha256 = "sha256-xB4oH0QS0VKTK2we+wdylS8VBijpp6tv7YV7fIX1s4A=";
+    hash = "sha256-7Niq+Xxq/r86qOeJl6/gNdH1XKm6m0fPhbPmgazZFkU=";
   };
 
   nativeBuildInputs = [