diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ef2f2db4aac201f53311120c6856c04fec9061d..06fdb9cfb97f71e7cf0be254ca3f034d374a96bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # IPtProxy Changelog
 
+## 0.4.0
+
+- Added `StopObfs4Proxy` function.
+- Updated Snowflake to latest master.
+
 ## 0.3.0
 
 - Added Snowflake Proxy support, so contributors can run proxies on their 
diff --git a/IPtProxy.framework/Versions/A/Headers/IPtProxy.objc.h b/IPtProxy.framework/Versions/A/Headers/IPtProxy.objc.h
index 2e9e850ca3df3886c8e1d906bf6d81bd636600f8..fd36cc1cbade132ec39b5452300d76556eae1593 100644
--- a/IPtProxy.framework/Versions/A/Headers/IPtProxy.objc.h
+++ b/IPtProxy.framework/Versions/A/Headers/IPtProxy.objc.h
@@ -78,4 +78,9 @@ FOUNDATION_EXPORT void IPtProxyStartSnowflake(NSString* _Nullable ice, NSString*
  */
 FOUNDATION_EXPORT void IPtProxyStartSnowflakeProxy(long capacity, NSString* _Nullable broker, NSString* _Nullable relay, NSString* _Nullable stun, NSString* _Nullable logFile, BOOL keepLocalAddresses, BOOL unsafeLogging);
 
+/**
+ * Stop the Obfs4Proxy.
+ */
+FOUNDATION_EXPORT void IPtProxyStopObfs4Proxy(void);
+
 #endif
diff --git a/IPtProxy.framework/Versions/A/IPtProxy b/IPtProxy.framework/Versions/A/IPtProxy
index 67180d1aba99e591a8cf4e1af9ac302ef2ebd4e5..849496e3e1e862e9ef0cb05a4ebda0ae06f82e9f 100644
Binary files a/IPtProxy.framework/Versions/A/IPtProxy and b/IPtProxy.framework/Versions/A/IPtProxy differ
diff --git a/IPtProxy.podspec b/IPtProxy.podspec
index 573d5f26aae48cfdfb596dedabcfd4d9941f379c..af18f945a78b63714317d846fa5eca8dc5356e0f 100644
--- a/IPtProxy.podspec
+++ b/IPtProxy.podspec
@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'IPtProxy'
-  s.version          = '0.3.0'
+  s.version          = '0.4.0'
   s.summary          = 'Obfs4proxy and Snowflake Pluggable Transports for iOS'
 
   s.description      = <<-DESC
diff --git a/IPtProxy.pom b/IPtProxy.pom
index fac9b25e0c111949aa2b106db28a52a02d1705d5..a9e2dedcaf1b9e73af21b5ccf84b13f1b101d2ea 100644
--- a/IPtProxy.pom
+++ b/IPtProxy.pom
@@ -4,6 +4,6 @@
   <modelVersion>0.1</modelVersion>
   <groupId>info.guardianproject.pluggabletransports</groupId>
   <artifactId>IPtProxy</artifactId>
-  <version>0.3.0</version>
+  <version>0.4.0</version>
   <packaging>aar</packaging>
 </project>