diff --git a/src/ru/progwards/java2/lessons/builders/Calc/pom.xml b/src/ru/progwards/java2/lessons/builders/Calc/pom.xml
index dd665e0..bd99a2a 100644
--- a/src/ru/progwards/java2/lessons/builders/Calc/pom.xml
+++ b/src/ru/progwards/java2/lessons/builders/Calc/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>