diff --git a/lerna.json b/lerna.json
index 772761f8e..96887a88e 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,4 +1,4 @@
 {
   "packages": ["packages/*"],
-  "version": "4.21.20"
+  "version": "4.21.21"
 }
diff --git a/packages/toast-ui.grid/package-lock.json b/packages/toast-ui.grid/package-lock.json
index 881a38a4d..fc25c7261 100644
--- a/packages/toast-ui.grid/package-lock.json
+++ b/packages/toast-ui.grid/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "tui-grid",
-  "version": "4.21.20",
+  "version": "4.21.21",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/packages/toast-ui.grid/package.json b/packages/toast-ui.grid/package.json
index e6af26cd9..cd41d4c72 100644
--- a/packages/toast-ui.grid/package.json
+++ b/packages/toast-ui.grid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tui-grid",
-  "version": "4.21.20",
+  "version": "4.21.21",
   "description": "TOAST UI Grid : Powerful data grid control supported by TOAST UI",
   "main": "dist/tui-grid.js",
   "types": "types/index.d.ts",
diff --git a/packages/toast-ui.grid/types/index.d.ts b/packages/toast-ui.grid/types/index.d.ts
index e67935829..8de3ce253 100644
--- a/packages/toast-ui.grid/types/index.d.ts
+++ b/packages/toast-ui.grid/types/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for TOAST UI Grid v4.21.20
+// Type definitions for TOAST UI Grid v4.21.21
 // TypeScript Version: 3.9.5
 
 import { CellValue, InvalidRow, Row, RowKey, RowSpan, SortState } from './store/data';