diff --git a/README.md b/README.md
index f9d2134..2e5c0ad 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,8 @@ Versions
 
 IK version | ES version
 -----------|-----------
-master | 2.3.5 -> master
+master | 5.x -> master
+5.0.0-alpha5 | 5.0.0-alpha5
 1.9.5 | 2.3.5
 1.9.4 | 2.3.4
 1.9.3 | 2.3.3
@@ -238,6 +239,12 @@ mvn package
 请在某个索引下调用analyze接口测试,而不是直接调用analyze接口
 如:http://localhost:9200/your_index/_analyze?text=中华人民共和国MN&tokenizer=my_ik
 
+Changes
+
+*5.0.0*
+
+- 移除名为 ik analyzer和tokenizer,请分别使用 ik_smart 和 ik_max_word
+
 
 Thanks
 ------
diff --git a/pom.xml b/pom.xml
index 1bc223f..35817b0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -113,8 +113,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.5.1</version>
                 <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
+                    <source>${maven.compiler.target}</source>
+                    <target>${maven.compiler.target}</target>
                 </configuration>
             </plugin>
             <plugin>
@@ -207,8 +207,8 @@
                             <artifactId>maven-compiler-plugin</artifactId>
                             <version>2.3.2</version>
                             <configuration>
-                                <source>1.8</source>
-                                <target>1.8</target>
+                                <source>${maven.compiler.target}</source>
+                                <target>${maven.compiler.target}</target>
                             </configuration>
                         </plugin>
                         <plugin>