diff --git a/_1611-Lserver/pom.xml b/_1611-Lserver/pom.xml
index f94feb1..d0e8607 100644
--- a/_1611-Lserver/pom.xml
+++ b/_1611-Lserver/pom.xml
@@ -25,7 +25,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/_1611-client/pom.xml b/_1611-client/pom.xml
index 578f7e9..1ef0436 100644
--- a/_1611-client/pom.xml
+++ b/_1611-client/pom.xml
@@ -27,7 +27,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
 
diff --git a/pom.xml b/pom.xml
index 21bbfe2..477bef7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,7 +27,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>