diff --git a/pkgs/development/tools/parsing/tree-sitter/update.nix b/pkgs/development/tools/parsing/tree-sitter/update.nix
index 19d29f4eaa10..118d33601c90 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/update.nix
@@ -304,6 +304,10 @@ let
       orga = "victorhqc";
       repo = "tree-sitter-prisma";
     };
+    "tree-sitter-org" = {
+      orga = "milisims";
+      repo = "tree-sitter-org";
+    };
   };
 
   allGrammars =