diff --git a/samples/spring/pet-store/pom.xml b/samples/spring/pet-store/pom.xml
index 5fb5c3334..08062dc2e 100644
--- a/samples/spring/pet-store/pom.xml
+++ b/samples/spring/pet-store/pom.xml
@@ -25,7 +25,7 @@
 
     <properties>
         <spring.version>6.0.13</spring.version>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
     </properties>