diff --git a/build.gradle b/build.gradle
index d0b73f10..bc13a0a8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -42,8 +42,8 @@ dependencies {
     testCompile ('org.assertj:assertj-core:3.8.0') 
     testCompile ('com.squareup.okhttp:mockwebserver:2.7.5') 
     testCompile ('org.apache.jclouds.driver:jclouds-slf4j:2.0.2') 
-    testCompile ('ch.qos.logback:logback-core:1.2.1') 
-    testCompile ('ch.qos.logback:logback-classic:1.2.1')
+    testCompile ('ch.qos.logback:logback-core:1.2.3') 
+    testCompile ('ch.qos.logback:logback-classic:1.2.3')
 }
 
 ext.compatibilityVersion = '1.7'