diff --git a/pom.xml b/pom.xml
index 3c07b76dd1..5f4066f30a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -120,7 +120,7 @@
 
         <!-- Shared properties with plugins and version numbers across submodules-->
         <asciidoctorj.version>2.5.3</asciidoctorj.version>
-        <bootstrap.version>3.3.7</bootstrap.version>
+        <bootstrap.version>5.3.3</bootstrap.version>
         <cglib.version>2.2</cglib.version> <!-- do not update necessary for lesson -->
         <checkstyle.version>3.1.2</checkstyle.version>
         <commons-collections.version>3.2.1</commons-collections.version>