diff --git a/pom.xml b/pom.xml
index 9381a8a00..28986bdfb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -163,7 +163,7 @@ SOFTWARE.
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.3.14</version>
+      <version>1.5.9</version>
     </dependency>
     <dependency>
       <groupId>com.jcabi</groupId>