diff --git a/docs/Operators.md b/docs/Operators.md
index 963155333..ea84a360c 100644
--- a/docs/Operators.md
+++ b/docs/Operators.md
@@ -6,7 +6,7 @@ This page offers a basic description of the operators (OPs) in Data-Juicer. User
 
 ## Overview
 
-The operators in Data-Juicer are categorized into 5 types.
+The operators in Data-Juicer are categorized into 7 types.
 
 | Type                              | Number | Description                                     |
 |-----------------------------------|:------:|-------------------------------------------------|
diff --git a/docs/Operators_ZH.md b/docs/Operators_ZH.md
index 6c22ac0fe..40710f68f 100644
--- a/docs/Operators_ZH.md
+++ b/docs/Operators_ZH.md
@@ -6,7 +6,7 @@
 
 ## 概览
 
-Data-Juicer 中的算子分为以下 5 种类型。
+Data-Juicer 中的算子分为以下 7 种类型。
 
 | 类型                                | 数量 | 描述            |
 |------------------------------------|:--:|---------------|