diff --git a/pom.xml b/pom.xml
index 9a1ff04..cf084f8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,7 +35,7 @@
     <!-- Third-party dependencies. -->
     <bouncycastle.version>1.78.1</bouncycastle.version>
     <junit.version>5.11.2</junit.version>
-    <logback.version>1.5.8</logback.version>
+    <logback.version>1.5.9</logback.version>
   </properties>
 
   <licenses>