diff --git a/appengine-java8/springboot-helloworld/pom.xml b/appengine-java8/springboot-helloworld/pom.xml
index b344ee9f776..d262086f0b6 100644
--- a/appengine-java8/springboot-helloworld/pom.xml
+++ b/appengine-java8/springboot-helloworld/pom.xml
@@ -20,7 +20,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <spring.boot.version>2.5.5</spring.boot.version> <!-- DO NOT UPDATE w/o MANUAL TESTING -->
+    <spring.boot.version>2.5.15</spring.boot.version> <!-- DO NOT UPDATE w/o MANUAL TESTING -->
     <maven.compiler.target>1.8</maven.compiler.target>
     <maven.compiler.source>1.8</maven.compiler.source>
   </properties>