diff --git a/common/pom.xml b/common/pom.xml
index bb1423a..e9b6eb6 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -25,7 +25,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
 
diff --git a/eureka/pom.xml b/eureka/pom.xml
index 88f6a8e..52cc55b 100644
--- a/eureka/pom.xml
+++ b/eureka/pom.xml
@@ -25,7 +25,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
 
diff --git a/hello/pom.xml b/hello/pom.xml
index fa98e72..0de9b6e 100644
--- a/hello/pom.xml
+++ b/hello/pom.xml
@@ -25,7 +25,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 7af1f51..f1b05df 100644
--- a/pom.xml
+++ b/pom.xml
@@ -87,7 +87,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
 
diff --git a/zuul/pom.xml b/zuul/pom.xml
index 614181c..3111275 100644
--- a/zuul/pom.xml
+++ b/zuul/pom.xml
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>