diff --git a/denops/denippet/main.ts b/denops/denippet/main.ts
index 9570079..cca9ed4 100644
--- a/denops/denippet/main.ts
+++ b/denops/denippet/main.ts
@@ -53,7 +53,7 @@ export function main(denops: Denops): void {
     clearTimeout(timeoutId);
     timeoutId = setTimeout(async () => {
       const id = lambda.register(denops, async () => {
-        await session.update();
+        await session.update(session.snippet?.currentNode().tabstop);
         return true;
       });
       await denops.call(
@@ -65,9 +65,9 @@ export function main(denops: Denops): void {
     }, syncDelay);
   }
 
-  async function forceUpdate(): Promise<void> {
+  async function forceUpdate(tabstop?: number): Promise<void> {
     clearTimeout(timeoutId);
-    await session.update();
+    await session.update(tabstop);
   }
 
   denops.dispatcher = {
@@ -123,7 +123,7 @@ export function main(denops: Denops): void {
           if (syncDelay >= 0) {
             const updateId = lambda.register(denops, async () => {
               if (syncDelay === 0) {
-                await session.update();
+                await session.update(session.snippet?.currentNode().tabstop);
               } else if (syncDelay > 0) {
                 debounceUpdate(syncDelay);
               }
@@ -149,7 +149,7 @@ export function main(denops: Denops): void {
         return;
       }
       if ((await fn.mode(denops))[0] === "i") {
-        await forceUpdate();
+        await forceUpdate(session.snippet.currentNode().tabstop);
       }
       session.guard();
       await session.jump(dir);
diff --git a/denops/denippet/session.ts b/denops/denippet/session.ts
index 9b36c76..b1219c3 100644
--- a/denops/denippet/session.ts
+++ b/denops/denippet/session.ts
@@ -49,12 +49,12 @@ export class Session {
     await clearExtmark(this.denops);
   }
 
-  async update(): Promise<void> {
+  async update(tabstop?: number): Promise<void> {
     if (this.isGuarded) {
       return;
     }
     try {
-      await this.snippet?.update();
+      await this.snippet?.update(tabstop);
     } catch (e) {
       echoerr(this.denops, e);
       await this.drop();
diff --git a/denops/denippet/snippet.ts b/denops/denippet/snippet.ts
index c43316b..480541f 100644
--- a/denops/denippet/snippet.ts
+++ b/denops/denippet/snippet.ts
@@ -86,11 +86,11 @@ export class Snippet {
     return this.jumpableNodes[this.nodeIndex];
   }
 
-  async update(): Promise<void> {
+  async update(tabstop?: number): Promise<void> {
     await this.currentNode().updateInput();
     const eventignore = await op.eventignore.get(this.denops);
     await op.eventignore.set(this.denops, "all");
-    await this.snippet.updateRange(undefined, this.currentNode().tabstop);
+    await this.snippet.updateRange(undefined, tabstop);
     await op.eventignore.set(this.denops, eventignore);
     // Extmark could disappear with updateRange().
     await this.currentNode().setExtmark();