diff --git a/build.gradle b/build.gradle
index 9288ddd..3960ccc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -44,7 +44,7 @@ dependencies {
     compile group: 'com.beust', name: 'jcommander', version: '1.72'
 
     testCompile 'junit:junit:4.12'
-    testCompile 'org.apache.commons:commons-lang3:3.4'
+    testCompile 'org.apache.commons:commons-lang3:3.12.0'
     testCompile 'org.assertj:assertj-core:3.8.0'
 }