diff --git a/broker/pom.xml b/broker/pom.xml
index bf29f291..89fbbc53 100644
--- a/broker/pom.xml
+++ b/broker/pom.xml
@@ -5,7 +5,7 @@
         <relativePath>../</relativePath>
         <artifactId>wildfirechat-parent</artifactId>
         <groupId>cn.wildfirechat</groupId>
-        <version>1.1.1</version>
+        <version>1.1.2</version>
     </parent>
 
     <artifactId>moquette-broker</artifactId>
@@ -62,7 +62,7 @@
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
             <artifactId>json-simple</artifactId>
-            <version>1.1.1</version>
+            <version>1.1.2</version>
         </dependency>
 
         <dependency>
diff --git a/common/pom.xml b/common/pom.xml
index 4d17df6c..e6e6acbc 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>wildfirechat-parent</artifactId>
         <groupId>cn.wildfirechat</groupId>
-        <version>1.1.1</version>
+        <version>1.1.2</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -35,7 +35,7 @@
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
             <artifactId>json-simple</artifactId>
-            <version>1.1.1</version>
+            <version>1.1.2</version>
         </dependency>
     </dependencies>
 
diff --git a/distribution/pom.xml b/distribution/pom.xml
index bf56fb21..e6fea23d 100755
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -6,7 +6,7 @@
         <!--<relativePath>../pom.xml</relativePath>-->
         <artifactId>wildfirechat-parent</artifactId>
         <groupId>cn.wildfirechat</groupId>
-        <version>1.1.1</version>
+        <version>1.1.2</version>
     </parent>
 
     <artifactId>distribution</artifactId>
diff --git a/pom.xml b/pom.xml
index 2bdfe540..6dbcb2b8 100755
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
     <artifactId>wildfirechat-parent</artifactId>
 
     <packaging>pom</packaging>
-    <version>1.1.1</version>
+    <version>1.1.2</version>
     <name>Wildfire Chat</name>
     <description>Wildfire Chat Server</description>
     <inceptionYear>2019</inceptionYear>
diff --git a/release_note.md b/release_note.md
index a441147e..62f3d2f8 100644
--- a/release_note.md
+++ b/release_note.md
@@ -12,6 +12,11 @@
 
 # 更新记录
 
+--------------
+Release note 1.1.2:
+1. 会议SDK添加查询会议是否存在的接口
+2. 单聊会话定向消息分发包含发送者
+
 --------------
 Release note 1.1.1:
 1. 当用户获取群组信息，可以根据返回信息判断是否在群中。
diff --git a/sdk/pom.xml b/sdk/pom.xml
index d2c6899b..6680e88c 100644
--- a/sdk/pom.xml
+++ b/sdk/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>wildfirechat-parent</artifactId>
         <groupId>cn.wildfirechat</groupId>
-        <version>1.1.1</version>
+        <version>1.1.2</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -25,7 +25,7 @@
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
             <artifactId>json-simple</artifactId>
-            <version>1.1.1</version>
+            <version>1.1.2</version>
         </dependency>
 
         <dependency>