diff --git a/tree_sitter_v/bindings/node_types.v b/tree_sitter_v/bindings/node_types.v
index db1861ff..3c6cbb24 100644
--- a/tree_sitter_v/bindings/node_types.v
+++ b/tree_sitter_v/bindings/node_types.v
@@ -108,6 +108,7 @@ pub enum NodeType {
 	match_expression_list
 	module_clause
 	multi_return_type
+	mut_is_clause
 	mutability_modifiers
 	mutable_expression
 	mutable_identifier
@@ -419,6 +420,7 @@ const node_type_name_to_enum = {
 	'match_expression_list':            NodeType.match_expression_list
 	'module_clause':                    NodeType.module_clause
 	'multi_return_type':                NodeType.multi_return_type
+	'mut_is_clause':                    NodeType.mut_is_clause
 	'mutability_modifiers':             NodeType.mutability_modifiers
 	'mutable_expression':               NodeType.mutable_expression
 	'mutable_identifier':               NodeType.mutable_identifier
diff --git a/tree_sitter_v/grammar.js b/tree_sitter_v/grammar.js
index 16a44dca..fd4dedf5 100644
--- a/tree_sitter_v/grammar.js
+++ b/tree_sitter_v/grammar.js
@@ -1209,10 +1209,12 @@ module.exports = grammar({
 		for_statement: ($) =>
 			seq(
 				'for',
-				optional(choice($.range_clause, $.for_clause, $._expression)),
+				optional(choice($.range_clause, $.for_clause, $.mut_is_clause, $._expression)),
 				field('body', $.block),
 			),
 
+		mut_is_clause: ($) => prec.left(PREC.primary, seq('mut', $.is_expression)),
+
 		range_clause: ($) =>
 			prec.left(
 				PREC.primary,
diff --git a/tree_sitter_v/package.json b/tree_sitter_v/package.json
index a2431a6a..921c1149 100644
--- a/tree_sitter_v/package.json
+++ b/tree_sitter_v/package.json
@@ -24,7 +24,7 @@
 		"node-gyp-build": "^4.8.0"
 	},
 	"peerDependencies": {
-		"tree-sitter": "^0.21.0"
+		"tree-sitter": "^0.21.1"
 	},
 	"peerDependenciesMeta": {
 		"tree_sitter": {
diff --git a/tree_sitter_v/src/grammar.json b/tree_sitter_v/src/grammar.json
index 89b4e928..c1c12440 100644
--- a/tree_sitter_v/src/grammar.json
+++ b/tree_sitter_v/src/grammar.json
@@ -8017,6 +8017,10 @@
                   "type": "SYMBOL",
                   "name": "for_clause"
                 },
+                {
+                  "type": "SYMBOL",
+                  "name": "mut_is_clause"
+                },
                 {
                   "type": "SYMBOL",
                   "name": "_expression"
@@ -8038,6 +8042,23 @@
         }
       ]
     },
+    "mut_is_clause": {
+      "type": "PREC_LEFT",
+      "value": 7,
+      "content": {
+        "type": "SEQ",
+        "members": [
+          {
+            "type": "STRING",
+            "value": "mut"
+          },
+          {
+            "type": "SYMBOL",
+            "name": "is_expression"
+          }
+        ]
+      }
+    },
     "range_clause": {
       "type": "PREC_LEFT",
       "value": 7,
diff --git a/tree_sitter_v/src/node-types.json b/tree_sitter_v/src/node-types.json
index f586e068..583f0027 100644
--- a/tree_sitter_v/src/node-types.json
+++ b/tree_sitter_v/src/node-types.json
@@ -1403,6 +1403,10 @@
           "type": "for_clause",
           "named": true
         },
+        {
+          "type": "mut_is_clause",
+          "named": true
+        },
         {
           "type": "range_clause",
           "named": true
@@ -2656,6 +2660,21 @@
       ]
     }
   },
+  {
+    "type": "mut_is_clause",
+    "named": true,
+    "fields": {},
+    "children": {
+      "multiple": false,
+      "required": true,
+      "types": [
+        {
+          "type": "is_expression",
+          "named": true
+        }
+      ]
+    }
+  },
   {
     "type": "mutability_modifiers",
     "named": true,
diff --git a/tree_sitter_v/test/corpus/for_statement.txt b/tree_sitter_v/test/corpus/for_statement.txt
index c5ef8171..e18f1512 100644
--- a/tree_sitter_v/test/corpus/for_statement.txt
+++ b/tree_sitter_v/test/corpus/for_statement.txt
@@ -54,6 +54,41 @@ for i in 0 .. 10 {
           (int_literal))))
     (block)))
 
+================================================================================
+Simple for is statement
+================================================================================
+for v is a {
+}
+--------------------------------------------------------------------------------
+
+(source_file
+  (for_statement
+    (is_expression
+      (reference_expression
+        (identifier))
+      (plain_type
+        (type_reference_expression
+          (identifier))))
+    (block)))
+
+================================================================================
+Simple for mut is statement
+================================================================================
+for mut v is a {
+}
+--------------------------------------------------------------------------------
+
+(source_file
+  (for_statement
+    (mut_is_clause
+      (is_expression
+        (reference_expression
+          (identifier))
+        (plain_type
+          (type_reference_expression
+            (identifier)))))
+    (block)))
+
 ================================================================================
 Simple C for statement
 ================================================================================