diff --git a/backend/pom.xml b/backend/pom.xml
index cfd1984..53327f2 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -26,7 +26,7 @@
     <archunit.version>1.4.2</archunit.version>
     <spotless.version>3.7.0</spotless.version>
     <checkstyle-plugin.version>3.6.0</checkstyle-plugin.version>
-    <checkstyle.version>10.21.4</checkstyle.version>
+    <checkstyle.version>13.7.0</checkstyle.version>
     <jacoco.version>0.8.12</jacoco.version>
     <!-- Coverage gate (SPEC-0028/DL-0099): minimum INSTRUCTION coverage enforced by jacoco:check at
          verify. A defensible floor the current code already passes — a real drop below it FAILS the