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 cce6d4a3c8a1..683cd3041a87 100644
--- a/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
+++ b/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
@@ -1640,10 +1640,10 @@
   };
 
   mojo = {
-    version = "0-unstable-2024-12-07";
+    version = "0-unstable-2025-12-25";
     url = "github:lsh/tree-sitter-mojo";
-    rev = "564d5a8489e20e5f723020ae40308888699055c0";
-    hash = "sha256-UY4gTG9HI/agpD+2syb7lUqfZpw6I6UnKzs9zE9JFwA=";
+    rev = "03966fb3f209bea86844aab3bd0f2158a5a8bb8d";
+    hash = "sha256-Ofc8Z1q0Rxb3q4iYMtnKanUdnpGetE8A8sl+Sr1t3PA=";
     meta = {
       license = lib.licenses.mit;
       maintainers = with lib.maintainers; [