diff --git a/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix b/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
index 8e671861f574..42f674918f5c 100644
--- a/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
+++ b/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
@@ -2256,10 +2256,10 @@
   };
 
   rescript = {
-    version = "6.0.0-unstable-2026-04-26";
+    version = "0-unstable-2026-05-02";
     url = "github:rescript-lang/tree-sitter-rescript";
-    rev = "5b90cd4e4138b1231a67977303bda47eb608480a";
-    hash = "sha256-f5/z566/Ez8+jzQSXoWkEK3LJGYjWupQw+BFPDyOxsE=";
+    rev = "5c71bebe716dc89ca84b816f9646456dd85666cc";
+    hash = "sha256-45wPsR0ipBrd6R6SbL65EpIadAG0alQHzIXZhKJ9BkA=";
     meta = {
       license = lib.licenses.mit;
       maintainers = with lib.maintainers; [