diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix b/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
index 5adf5f2b26a4..3cd3ca841982 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
@@ -603,9 +603,9 @@
   };
 
   slint = {
-    version = "0-unstable-2025-07-13";
-    url = "github:slint-ui/tree-sitter-slint/96bc969d20ff347030519184ea2467f4046a524d";
-    hash = "sha256-yTZxuA3Bco0Cv+kZ1VbfQZbIu12Y5N4b3HIUJ/PBpWA=";
+    version = "0-unstable-2025-12-09";
+    url = "github:slint-ui/tree-sitter-slint/10fb0f188d7950400773c06ba6c31075866e14bf";
+    hash = "sha256-60DfIx7aQqe0/ocxbpr00eU3IPs23E8TUILcVGrBYVs=";
   };
 
   smithy = {