diff --git a/guides-parent/pom.xml b/guides-parent/pom.xml
index 1ac46146..0b05d028 100644
--- a/guides-parent/pom.xml
+++ b/guides-parent/pom.xml
@@ -49,7 +49,7 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-autoconfigure</artifactId>
-                <version>2.3.5.RELEASE</version>
+                <version>2.5.15</version>
             </dependency>
             <dependency>
                 <groupId>org.springframework.boot</groupId>
diff --git a/middleware/pom.xml b/middleware/pom.xml
index ca7a4ccc..a2b5d86c 100644
--- a/middleware/pom.xml
+++ b/middleware/pom.xml
@@ -23,7 +23,7 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-autoconfigure</artifactId>
-            <version>2.3.5.RELEASE</version>
+            <version>2.5.15</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>