diff --git a/logstash-logging-spring-boot-starter/pom.xml b/logstash-logging-spring-boot-starter/pom.xml
index 1231fc0..d041475 100644
--- a/logstash-logging-spring-boot-starter/pom.xml
+++ b/logstash-logging-spring-boot-starter/pom.xml
@@ -31,7 +31,7 @@
         <java.version>17</java.version>
         <commons-io.version>2.21.0</commons-io.version>
         <javax-servlet.version>6.1.0</javax-servlet.version>
-        <logstash-logback.version>8.1</logstash-logback.version>
+        <logstash-logback.version>9.0</logstash-logback.version>
         <spring.version>6.2.13</spring.version>
         <spring.boot.version>3.5.7</spring.boot.version>
         <slf4j.version>2.0.17</slf4j.version>
diff --git a/reactive-logstash-logging-spring-boot-starter/pom.xml b/reactive-logstash-logging-spring-boot-starter/pom.xml
index 4b80669..ed3d482 100644
--- a/reactive-logstash-logging-spring-boot-starter/pom.xml
+++ b/reactive-logstash-logging-spring-boot-starter/pom.xml
@@ -30,7 +30,7 @@
     <properties>
         <java.version>17</java.version>
         <commons-io.version>2.21.0</commons-io.version>
-        <logstash-logback.version>8.1</logstash-logback.version>
+        <logstash-logback.version>9.0</logstash-logback.version>
         <spring.version>6.2.13</spring.version>
         <spring.boot.version>3.5.7</spring.boot.version>
         <slf4j.version>2.0.17</slf4j.version>