diff --git a/06_Constructing_LSTM_Network_for_time_series/sourceCode/cookbookapp-lstm-time-series/pom.xml b/06_Constructing_LSTM_Network_for_time_series/sourceCode/cookbookapp-lstm-time-series/pom.xml
index f15a4cd..4c4e9cc 100644
--- a/06_Constructing_LSTM_Network_for_time_series/sourceCode/cookbookapp-lstm-time-series/pom.xml
+++ b/06_Constructing_LSTM_Network_for_time_series/sourceCode/cookbookapp-lstm-time-series/pom.xml
@@ -11,7 +11,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>