diff --git a/code/Hadoop/hdfs-java-api/pom.xml b/code/Hadoop/hdfs-java-api/pom.xml
index e04cfbd7..09b1eed5 100644
--- a/code/Hadoop/hdfs-java-api/pom.xml
+++ b/code/Hadoop/hdfs-java-api/pom.xml
@@ -34,7 +34,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
diff --git a/code/Hbase/hbase-java-api-1.x/pom.xml b/code/Hbase/hbase-java-api-1.x/pom.xml
index 915329b8..6c8ae3ba 100644
--- a/code/Hbase/hbase-java-api-1.x/pom.xml
+++ b/code/Hbase/hbase-java-api-1.x/pom.xml
@@ -30,7 +30,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
diff --git a/code/Hbase/hbase-java-api-2.x/pom.xml b/code/Hbase/hbase-java-api-2.x/pom.xml
index a4a449bf..391b0d74 100644
--- a/code/Hbase/hbase-java-api-2.x/pom.xml
+++ b/code/Hbase/hbase-java-api-2.x/pom.xml
@@ -29,7 +29,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
diff --git a/code/Phoenix/spring-mybatis-phoenix/pom.xml b/code/Phoenix/spring-mybatis-phoenix/pom.xml
index 7b0d45b9..958e8fab 100644
--- a/code/Phoenix/spring-mybatis-phoenix/pom.xml
+++ b/code/Phoenix/spring-mybatis-phoenix/pom.xml
@@ -43,7 +43,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/code/Zookeeper/curator/pom.xml b/code/Zookeeper/curator/pom.xml
index e435f6a8..b9b14bdb 100644
--- a/code/Zookeeper/curator/pom.xml
+++ b/code/Zookeeper/curator/pom.xml
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
         </dependency>
     </dependencies>