diff --git a/spring-boot-oauth2/pom.xml b/spring-boot-oauth2/pom.xml
index 6917587..5e000b0 100644
--- a/spring-boot-oauth2/pom.xml
+++ b/spring-boot-oauth2/pom.xml
@@ -45,7 +45,7 @@
 		<dependency>
 			<groupId>org.webjars</groupId>
 			<artifactId>bootstrap</artifactId>
-			<version>3.2.0</version>
+			<version>3.4.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.webjars</groupId>