diff --git a/flake.nix b/flake.nix
index 54223b3..968948c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,12 +19,12 @@
 
         rmlui = pkgs.stdenv.mkDerivation rec {
           pname = "rmlui";
-          version = "master";
+          version = "6.2-unstable-2026-8-7";
 
           src = pkgs.fetchFromGitHub {
             owner = "mikke89";
             repo = "RmlUi";
-            rev = "master";
+            rev = "9cbb5440de3e86e7031544c26116fe7b814028b9";
             hash = "sha256-5vyrVJhmNE/msJuVSESsKhiW9Pc+peA0NTYJDVoRanA=";
           };