diff --git a/admin/repository/mysql_db.go b/admin/repository/mysql_db.go
index 407963b..60cc6d4 100644
--- a/admin/repository/mysql_db.go
+++ b/admin/repository/mysql_db.go
@@ -795,7 +795,7 @@ func migrateMySQLV30(db *sql.DB) error {
 			pdd_goods_id VARCHAR(191) COLLATE utf8mb4_bin NOT NULL,
 			pdd_dimension_key VARCHAR(191) COLLATE utf8mb4_bin NOT NULL,
 			pdd_color_value VARCHAR(500) COLLATE utf8mb4_bin NOT NULL,
-			context_version CHAR(64) COLLATE ascii_bin NOT NULL,
+			context_version CHAR(64) COLLATE utf8mb4_bin NOT NULL,
 			mapped_by VARCHAR(191) COLLATE utf8mb4_bin NOT NULL,
 			mapped_at VARCHAR(35) NOT NULL,
 			PRIMARY KEY (shopee_goods_id,shopee_color_key,pdd_goods_id),
@@ -807,12 +807,12 @@ func migrateMySQLV30(db *sql.DB) error {
 			shopee_color_key VARCHAR(191) COLLATE utf8mb4_bin NOT NULL,
 			shopee_color_raw VARCHAR(500) COLLATE utf8mb4_bin NOT NULL,
 			pdd_goods_id VARCHAR(191) COLLATE utf8mb4_bin NOT NULL,
-			action VARCHAR(16) COLLATE ascii_bin NOT NULL,
+			action VARCHAR(16) COLLATE utf8mb4_bin NOT NULL,
 			old_dimension_key VARCHAR(191) COLLATE utf8mb4_bin NULL,
 			old_color_value VARCHAR(500) COLLATE utf8mb4_bin NULL,
 			new_dimension_key VARCHAR(191) COLLATE utf8mb4_bin NULL,
 			new_color_value VARCHAR(500) COLLATE utf8mb4_bin NULL,
-			context_version CHAR(64) COLLATE ascii_bin NOT NULL,
+			context_version CHAR(64) COLLATE utf8mb4_bin NOT NULL,
 			actor_user_id VARCHAR(191) COLLATE utf8mb4_bin NOT NULL,
 			created_at VARCHAR(35) NOT NULL,
 			CONSTRAINT chk_product_color_mapping_audit_action CHECK (action IN ('upsert','clear')),