diff --git a/logstash-logging-spring-boot-starter/pom.xml b/logstash-logging-spring-boot-starter/pom.xml
index e3bf33f..1991288 100644
--- a/logstash-logging-spring-boot-starter/pom.xml
+++ b/logstash-logging-spring-boot-starter/pom.xml
@@ -104,7 +104,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.18</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/loki-logging-spring-boot-starter/pom.xml b/loki-logging-spring-boot-starter/pom.xml
index eb9204d..b4852c9 100644
--- a/loki-logging-spring-boot-starter/pom.xml
+++ b/loki-logging-spring-boot-starter/pom.xml
@@ -105,7 +105,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.18</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/reactive-logstash-logging-spring-boot-starter/pom.xml b/reactive-logstash-logging-spring-boot-starter/pom.xml
index 2b2390f..10a32ed 100644
--- a/reactive-logstash-logging-spring-boot-starter/pom.xml
+++ b/reactive-logstash-logging-spring-boot-starter/pom.xml
@@ -91,7 +91,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.18</version>
         </dependency>
         <dependency>
             <groupId>io.projectreactor</groupId>