diff --git a/chopper/CHANGELOG.md b/chopper/CHANGELOG.md
index a3067275..6af68839 100644
--- a/chopper/CHANGELOG.md
+++ b/chopper/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 4.0.1
+
+- Fix for the null safety support
 ## 4.0.0
 
 - **Null safety support**
@@ -52,7 +55,7 @@ New way to handle errors
 
 ## 2.4.2
 
-- Fix on JsonConverter 
+- Fix on JsonConverter
     If content type header overrided using @Post(headers: {'content-type': '...'})
     The converter won't add json header and won't apply json.encode if content type is not JSON
 
@@ -101,10 +104,10 @@ New way to handle errors
 ## 2.2.0
 
 - Fix converter issue on List
-  - ***Breaking Change*** 
-  on `Converter.convertResponse<ResultType>(response)`, 
+  - ***Breaking Change***
+  on `Converter.convertResponse<ResultType>(response)`,
   it take a new generic type => `Converter.convertResponse<ResultType, ItemType>(response)`
-                 
+
 - deprecated `Chopper.service<Type>(Type)`, use `Chopper.getservice<Type>()` instead
 thanks to @MichaelDark
 
@@ -139,12 +142,12 @@ thanks to @MichaelDark
 - ***BreakingChange***
     Removed `name` parameter on `ChopperApi`
     New way to instanciate a service
-        
+
         @ChopperApi()
         abstract class MyService extends ChopperService {
             static MyService create([ChopperClient client]) => _$MyService(client);
         }
-        
+
 
 ## 1.0.0
 
diff --git a/chopper/pubspec.yaml b/chopper/pubspec.yaml
index 18ebf7d0..70d13169 100644
--- a/chopper/pubspec.yaml
+++ b/chopper/pubspec.yaml
@@ -1,6 +1,6 @@
 name: chopper
 description: Chopper is an http client generator using source_gen, inspired by Retrofit
-version: 4.0.0
+version: 4.0.1
 documentation: https://hadrien-lejard.gitbook.io/chopper
 repository: https://github.com/lejard-h/chopper
 author: Hadrien Lejard <hadrien.lejard@gmail.com>
diff --git a/chopper_generator/CHANGELOG.md b/chopper_generator/CHANGELOG.md
index 48198a10..c6c3e8aa 100644
--- a/chopper_generator/CHANGELOG.md
+++ b/chopper_generator/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 4.0.1
+
+- Fix for the null safety support
 ## 4.0.0
 
 - **Null safety support**
@@ -39,7 +42,7 @@
 
 ## 2.4.2
 
-- Fix on JsonConverter 
+- Fix on JsonConverter
     If content type header overrided using @Post(headers: {'content-type': '...'})
     The converter won't add json header and won't apply json.encode if content type is not JSON
 
@@ -59,7 +62,7 @@
 ## 2.3.4
 
   fix trailing slash when empty path
-	
+
 ## 2.3.3
 
 - update analyzer to `0.35.0`
@@ -91,10 +94,10 @@
 ## 2.2.0
 
 - Fix converter issue on List
-  - ***Breaking Change*** 
-  on `Converter.convertResponse<ResultType>(response)`, 
+  - ***Breaking Change***
+  on `Converter.convertResponse<ResultType>(response)`,
   it take a new generic type => `Converter.convertResponse<ResultType, ItemType>(response)`
-                 
+
 - deprecated `Chopper.service<Type>(Type)`, use `Chopper.getservice<Type>()` instead
 thanks to @MichaelDark
 
diff --git a/chopper_generator/pubspec.yaml b/chopper_generator/pubspec.yaml
index 11ab6e4c..f399b818 100644
--- a/chopper_generator/pubspec.yaml
+++ b/chopper_generator/pubspec.yaml
@@ -1,6 +1,6 @@
 name: chopper_generator
 description: Chopper is an http client generator using source_gen, inspired by Retrofit
-version: 4.0.0
+version: 4.0.1
 documentation: https://hadrien-lejard.gitbook.io/chopper
 repository: https://github.com/lejard-h/chopper
 author: Hadrien Lejard <hadrien.lejard@gmail.com>