diff --git a/Chapter01/maven-mix/pom.xml b/Chapter01/maven-mix/pom.xml
index 4675d17..0915b64 100644
--- a/Chapter01/maven-mix/pom.xml
+++ b/Chapter01/maven-mix/pom.xml
@@ -36,7 +36,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <kotlin.version>1.1-M04</kotlin.version>
-        <junit.version>4.12</junit.version>
+        <junit.version>4.13.1</junit.version>
     </properties>
 
     <dependencies>