diff --git a/class-19/websockets/pom.xml b/class-19/websockets/pom.xml
index 119b5d8..6ae8385 100644
--- a/class-19/websockets/pom.xml
+++ b/class-19/websockets/pom.xml
@@ -36,7 +36,7 @@
         <dependency>
             <groupId>org.webjars</groupId>
             <artifactId>bootstrap</artifactId>
-            <version>3.3.7</version>
+            <version>5.0.0</version>
         </dependency>
         <dependency>
             <groupId>org.webjars</groupId>