diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8a7d3f5..d7d2fa86 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## [2.1.0-Beta] - 2022-2-15
+## [2.1.0-nullsafety.0] - 2022-3-10
 ### Changed
 
 #### base 
@@ -9,13 +9,14 @@
 
 #### components
 - **Breaking change**: remove <code>BrnHorizontalStepsManager</code> and put function <code>forwardStep()</code>  <code>backStep()</code> into <code>BrnStepsController</code> thanks to leftcoding.
+- **Breaking change**:  remove <code>BrnDialogStyle</code> and replace with <code>BrnDialogConfig</code>.
 - <code>BrnCalendarView</code>: add <code>BrnCalendarView.single()</code> and <code>BrnCalendarView.range()</code> constructor and had its argument <code>startEndDateChange</code> removed.
 - <code>BrnSelectionEntityListBean</code>: <code>fromMap</code> is renamed to <code>fromJson</code>.
 - <code>BrnRadioButton</code>: optimize click area [#31](https://github.com/LianjiaTech/bruno/pull/31) , thanks to **a1017480401** .
 - <code>BrnScrollableTextDialog</code>: remove Navigator.pop(context) in <code>onSubmit()</code> and hand it over to external processing (user).
 - <code>BrnBubbleText</code>: add attribute <code>bgColor</code> and <code>textStyle</code>.
 - <code>BrnPairInfoTable</code>: add attribute <code>defaultVerticalAlignment</code>.
-- <code>BrnDialog</code>: remove <code>BrnDialogStyle</code> and replace with <code>BrnDialogConfig</code>.
+
 
 
 
@@ -40,4 +41,3 @@ Thanks again to **leftcoding**,  **jojinshallar**,  **laiiihz**,  **donywan**,
 
 - First publish adapt flutter sdk 1.22.4
 
-
diff --git a/README.en-US.md b/README.en-US.md
index 09a74976..6571c9bd 100644
--- a/README.en-US.md
+++ b/README.en-US.md
@@ -48,7 +48,7 @@ If you cannot access the demo, you can directly watch [Overview](https://github.
 | ---------- | ---------------- |
 | 1.0.0      | 1.22.4           |
 | 2.0.0      | 2.2.2            |
-| 2.1.0      | 2.2.2-null safety            |
+| 2.1.0-nullsafety.0      | 2.2.2            |
 
 > Attention although we have adapted version 2.2.2, support for null-safe is in the works. We'll keep you updated on github as soon as possible, so stay tuned to 🙂.
 
diff --git a/README.md b/README.md
index 5a6b8df6..2b5fe56a 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@
 | ---------- | ---------------- |
 | 1.0.0      | 1.22.4           |
 | 2.0.0      | 2.2.2            |
-| 2.1.0      | 2.2.2-null safety            |
+| 2.1.0-nullsafety.0      | 2.2.2            |
 
 
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 0ca04a1f..15ae855e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: bruno
 description: An enterprise-class package of Flutter components for mobile applications.
-version: 2.1.0
+version: 2.1.0-nullsafety.0
 homepage: https://github.com/LianjiaTech/bruno
 
 environment: