diff --git a/README.md b/README.md
index 79f13ed..46ebd43 100644
--- a/README.md
+++ b/README.md
@@ -24,16 +24,25 @@ cd build
 make toydb_run_engine -j<thread> # minimum build
 ```
 
+## Version
+
+We use openmldb-jdbc for validations, the version is:
+|Emulator Version | OpenMLDB Version|
+|--|--|
+| 1.0 | 0.8.3 |
+
+Toydb is optional, and you don't have to update the emulator. You can update it simply, just copy the newer toydb to `/tmp`.
+
 ## Run
 
 ```bash
-java -jar emulator-1.0-SNAPSHOT.jar
+java -jar emulator-1.0.jar
 ```
 
 If emulator jar doesn't have toydb_run_engine, you can copy toydb_run_engine to `/tmp` and run emulator.
 ```bash
 cp toydb_run_engine /tmp
-java -jar emulator-1.0-SNAPSHOT.jar
+java -jar emulator-1.0.jar
 ```
 
 ## Example - validate SQL
diff --git a/pom.xml b/pom.xml
index f784140..84423a7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
   <groupId>com.openmldb.emulator</groupId>
   <artifactId>emulator</artifactId>
-  <version>1.0-SNAPSHOT</version>
+  <version>1.0</version>
 
   <name>emulator</name>
   <!-- FIXME change it to the project's website -->
@@ -33,7 +33,7 @@
     <dependency>
       <groupId>com.4paradigm.openmldb</groupId>
       <artifactId>openmldb-jdbc</artifactId>
-      <version>0.8.2</version>
+      <version>0.8.3</version>
     </dependency>
     <dependency>
         <groupId>com.google.guava</groupId>