diff --git a/spring-boot-04-web-restfulcrud/pom.xml b/spring-boot-04-web-restfulcrud/pom.xml
index 2086d9e..aaf280c 100644
--- a/spring-boot-04-web-restfulcrud/pom.xml
+++ b/spring-boot-04-web-restfulcrud/pom.xml
@@ -53,7 +53,7 @@
 		<dependency>
 			<groupId>org.webjars</groupId>
 			<artifactId>bootstrap</artifactId>
-			<version>4.0.0</version>
+			<version>4.3.1</version>
 		</dependency>
 
 		<dependency>