diff --git a/course-mw/course-actors-common/pom.xml b/course-mw/course-actors-common/pom.xml
index 454c99884..cff18f554 100644
--- a/course-mw/course-actors-common/pom.xml
+++ b/course-mw/course-actors-common/pom.xml
@@ -24,7 +24,7 @@
 		<dependency>
 			<groupId>ch.qos.logback</groupId>
 			<artifactId>logback-classic</artifactId>
-			<version>1.2.3</version>
+			<version>1.3.12</version>
 		</dependency>
 		<dependency>
 			<groupId>joda-time</groupId>