diff --git a/pom.xml b/pom.xml
index cc06de3..5f4edf1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/src/main/java/org/wcong/test/algorithm/dp/LongestCommonSubsequence.java b/src/main/java/org/wcong/test/algorithm/dp/LongestCommonSubSequence.java
similarity index 100%
rename from src/main/java/org/wcong/test/algorithm/dp/LongestCommonSubsequence.java
rename to src/main/java/org/wcong/test/algorithm/dp/LongestCommonSubSequence.java