diff --git a/pkgs/development/tools/parsing/re-flex/default.nix b/pkgs/development/tools/parsing/re-flex/default.nix
new file mode 100644
index 000000000000..2d1f1c9f90d4
--- /dev/null
+++ b/pkgs/development/tools/parsing/re-flex/default.nix
@@ -0,0 +1,30 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, boost
+, autoconf
+, automake
+}:
+
+stdenv.mkDerivation rec {
+  pname = "re-flex";
+  version = "3.3.1";
+
+  src = fetchFromGitHub {
+    owner = "Genivia";
+    repo = "RE-flex";
+    rev = "v${version}";
+    sha256 = "w3ecuUa7lBtRv071acBIZGcpjBZD4UvVQdUzT7qWiMo=";
+  };
+
+  nativeBuildInputs = [ boost autoconf automake ];
+
+  meta = with lib; {
+    homepage = "https://github.com/Genivia/RE-flex";
+    description = "The regex-centric, fast lexical analyzer generator for C++ with full Unicode support";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    maintainers = with lib.maintainers; [ prrlvr ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 9c5ae6d6ac59..3f39bde96618 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -18002,6 +18002,8 @@ with pkgs;
   flex_2_5_35 = callPackage ../development/tools/parsing/flex/2.5.35.nix { };
   flex = callPackage ../development/tools/parsing/flex { };
 
+  re-flex = callPackage ../development/tools/parsing/re-flex { };
+
   flexibee = callPackage ../applications/office/flexibee { };
 
   flexcpp = callPackage ../development/tools/parsing/flexc++ { };