diff --git a/moonbit-docs/docs/README.md b/moonbit-docs/docs/README.md
index 81580713..58aeca2f 100644
--- a/moonbit-docs/docs/README.md
+++ b/moonbit-docs/docs/README.md
@@ -443,6 +443,7 @@ even: 6
 ```
 
 ### `for .. in` loop
+
 MoonBit supports traversing elements of different data structures and sequences via the `for .. in` loop syntax:
 
 ```moonbit
@@ -485,7 +486,6 @@ test "map test" {
 
 If a loop variable is unused, it can be ignored with `_`.
 
-
 ### Functional loop
 
 Functional loop is a powerful feature in MoonBit that enables you to write loops in a functional style.
@@ -1257,6 +1257,8 @@ Currently, the following operators can be overloaded:
 | `/`                   | `op_div`     |
 | `%`                   | `op_mod`     |
 | `=`                   | `op_equal`   |
+| `<<`                  | `op_shl`     |
+| `>>`                  | `op_shr`     |
 | `-` (unary)           | `op_neg`     |
 | `_[_]` (get item)     | `op_get`     |
 | `_[_] = _` (set item) | `op_set`     |
@@ -1327,8 +1329,8 @@ MoonBit supports C-Style bitwise operators for both 32 bits and 64 bits `Int` an
 | `&`      | `land`  |
 | `\|`     | `lor`   |
 | `^`      | `lxor`  |
-| `<<`     | `lsl`   |
-| `>>`     | `lsr`   |
+| `<<`     | `shl`   |
+| `>>`     | `shr`   |
 
 ## Error Handling
 
diff --git a/moonbit-docs/i18n/zh/docusaurus-plugin-content-docs/current/README.md b/moonbit-docs/i18n/zh/docusaurus-plugin-content-docs/current/README.md
index 3a6cd17e..e04edbe3 100644
--- a/moonbit-docs/i18n/zh/docusaurus-plugin-content-docs/current/README.md
+++ b/moonbit-docs/i18n/zh/docusaurus-plugin-content-docs/current/README.md
@@ -443,6 +443,7 @@ even: 6
 ```
 
 ### `for .. in` 循环
+
 MoonBit 使用 `for .. in` 循环语法来遍历各种数据结构和序列：
 
 ```moonbit
@@ -463,6 +464,7 @@ for k, v in { "x": 1, "y": 2, "z": 3 } {
 ```
 
 下面是另一个有两个循环变量的 `for .. in` 的例子，在遍历一个数组的同时追踪这是数组中的第几个元素：
+
 ```moonbit
 for index, elem in [ 4, 5, 6 ] {
   let i = index + 1
@@ -1220,6 +1222,8 @@ fn init {
 | `/`                  | `op_div`     |
 | `%`                  | `op_mod`     |
 | `=`                  | `op_equal`   |
+| `<<`                 | `op_shl`     |
+| `>>`                 | `op_shr`     |
 | `-`（一元运算符）    | `op_neg`     |
 | `_[_]`（获取项）     | `op_get`     |
 | `_[_] = _`（设置项） | `op_set`     |
@@ -1290,8 +1294,8 @@ MoonBit 支持 C 风格的位运算符，可用于 32 位和 64 位的 `Int` 和
 | `&`    | `land` |
 | `\|`   | `lor`  |
 | `^`    | `lxor` |
-| `<<`   | `lsl`  |
-| `>>`   | `lsr`  |
+| `<<`   | `shl`  |
+| `>>`   | `shr`  |
 
 ## 错误处理