diff --git a/pkgs/development/tools/parsing/re2c/default.nix b/pkgs/development/tools/parsing/re2c/default.nix
index dddd407d0da2ac..11c46e781d0498 100644
--- a/pkgs/development/tools/parsing/re2c/default.nix
+++ b/pkgs/development/tools/parsing/re2c/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "re2c";
-  version = "1.2.1";
+  version = "1.3";
 
   src = fetchFromGitHub {
     owner  = "skvadrik";
     repo   = "re2c";
     rev    = version;
-    sha256 = "1qj0ck9msb9h8g9qb1lr57jmlj8x68ini3y3ccdifjjahhhr0hd4";
+    sha256 = "0aqlf2h6i2m3dq11dkq89p4w4c9kp4x66s5rhp84gmpz5xqv1x5h";
   };
 
   nativeBuildInputs = [ autoreconfHook ];