diff --git a/pom.xml b/pom.xml
index f1c500a..0a917f1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -102,7 +102,7 @@
       <dependency>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-classic</artifactId>
-        <version>1.5.8</version>
+        <version>1.5.9</version>
       </dependency>
       <dependency>
         <groupId>com.io7m.seltzer</groupId>