diff --git a/complete/build.gradle b/complete/build.gradle
index eff351e..d0a22ed 100644
--- a/complete/build.gradle
+++ b/complete/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '3.3.0'
+    id 'org.springframework.boot' version '3.4.0'
 }
 
 apply plugin: 'io.spring.dependency-management'
diff --git a/initial/build.gradle b/initial/build.gradle
index 9fcfcec..5750460 100644
--- a/initial/build.gradle
+++ b/initial/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '3.3.0'
+    id 'org.springframework.boot' version '3.4.0'
 }
 
 apply plugin: 'io.spring.dependency-management'