diff --git a/apm-dist/release-docs/LICENSE b/apm-dist/release-docs/LICENSE
index 219c3e44a..81045f271 100755
--- a/apm-dist/release-docs/LICENSE
+++ b/apm-dist/release-docs/LICENSE
@@ -231,7 +231,7 @@ The text of each license is the standard Apache 2.0 license.
     Google: grpc 1.15.1: https://grpc.io/ , Apache 2.0
     Google: gprc-java 1.14.0: https://github.com/grpc/grpc-java, Apache 2.0
     Google: gprc-java 1.15.1: https://github.com/grpc/grpc-java, Apache 2.0
-    Google: guava 20.0: https://github.com/google/guava , Apache 2.0
+    Google: guava 23.1: https://github.com/google/guava , Apache 2.0
     Google: guice 4.1.0: https://github.com/google/guice , Apache 2.0
     Google: gson 2.8.1: https://github.com/google/gson , Apache 2.0
     Google: opencensus-java 0.12.3: https://github.com/census-instrumentation/opencensus-java , Apache 2.0
@@ -275,7 +275,7 @@ The text of each license is the standard Apache 2.0 license.
     netty 5.5.0: https://github.com/netty/netty/blob/4.1/LICENSE.txt, Apache 2.0
     annotations 13.0: http://www.jetbrains.org, Apache 2.0
     compiler 0.9.3: https://github.com/spullara/mustache.java, Apache 2.0
-    error_prone_annotations 2.0.19: https://github.com/google/error-prone, Apache 2.0
+    error_prone_annotations 2.0.18: https://github.com/google/error-prone, Apache 2.0
     hppc 0.7.1: https://github.com/carrotsearch/hppc, Apache 2.0
     instrumentation-api 0.4.3: https://github.com/google/instrumentation-java, Apache 2.0
     jackson-annotations 2.8.0: https://github.com/FasterXML/jackson-annotations, Apache 2.0
diff --git a/docs/en/setup/backend/backend-ui-setup.md b/docs/en/setup/backend/backend-ui-setup.md
index 7c2f8e548..7fa0bcce7 100644
--- a/docs/en/setup/backend/backend-ui-setup.md
+++ b/docs/en/setup/backend/backend-ui-setup.md
@@ -9,7 +9,7 @@ server and UI startup.
 1. **Webapp env**, in `webapp` folder. UI frontend jar file is in here and its `webapp.yml` setting file. 
 
 ## Quick start
-Requirement: **JDK8**
+Requirement: **JDK8 to JDK12 are tested**, other versions are not tested and may or may not work.
 
 Before you do quick start, you should know, quick start is to run skywalking backend and UI for preview
 or demonstration. In here, performance and long-term running are not our goals. 
diff --git a/oap-server/pom.xml b/oap-server/pom.xml
index 94fbf058a..e2ad820d6 100755
--- a/oap-server/pom.xml
+++ b/oap-server/pom.xml
@@ -48,7 +48,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <slf4j.version>1.7.25</slf4j.version>
         <log4j.version>2.9.0</log4j.version>
-        <guava.version>20.0</guava.version>
+        <guava.version>23.1-jre</guava.version>
         <snakeyaml.version>1.18</snakeyaml.version>
         <gson.version>2.8.1</gson.version>
         <graphql-java-tools.version>5.2.3</graphql-java-tools.version>
@@ -222,6 +222,12 @@
                 <groupId>com.google.guava</groupId>
                 <artifactId>guava</artifactId>
                 <version>${guava.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>com.google.j2objc</groupId>
+                        <artifactId>j2objc-annotations</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
             <dependency>
                 <groupId>org.yaml</groupId>
diff --git a/tools/dependencies/known-oap-backend-dependencies.txt b/tools/dependencies/known-oap-backend-dependencies.txt
index a6f386e08..d730f9aa1 100755
--- a/tools/dependencies/known-oap-backend-dependencies.txt
+++ b/tools/dependencies/known-oap-backend-dependencies.txt
@@ -1,5 +1,5 @@
 aggs-matrix-stats-client-6.3.2.jar
-animal-sniffer-annotations-1.17.jar
+animal-sniffer-annotations-1.14.jar
 annotations-13.0.jar
 antlr4-runtime-4.7.1.jar
 aopalliance-1.0.jar
@@ -33,7 +33,7 @@ elasticsearch-rest-client-6.3.2.jar
 elasticsearch-rest-high-level-client-6.3.2.jar
 elasticsearch-secure-sm-6.3.2.jar
 elasticsearch-x-content-6.3.2.jar
-error_prone_annotations-2.2.0.jar
+error_prone_annotations-2.0.18.jar
 etcd4j-2.17.0.jar
 fastjson-1.2.47.jar
 freemarker-2.3.28.jar
@@ -47,7 +47,7 @@ grpc-protobuf-1.15.1.jar
 grpc-protobuf-lite-1.15.1.jar
 grpc-stub-1.15.1.jar
 gson-2.8.1.jar
-guava-20.0.jar
+guava-23.1-jre.jar
 guice-4.1.0.jar
 h2-1.4.196.jar
 HdrHistogram-2.1.9.jar