diff --git a/admintest/pom.xml b/admintest/pom.xml
index ae12e77d..28d9c160 100644
--- a/admintest/pom.xml
+++ b/admintest/pom.xml
@@ -182,7 +182,7 @@
 <dependency>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-classic</artifactId>
-    <version>1.2.6</version>
+    <version>1.5.21</version>
 </dependency>
 <dependency>
   <groupId>com.paulhammant</groupId>