diff --git a/saml2/saml2-service-provider/spring-security-saml2-service-provider.gradle b/saml2/saml2-service-provider/spring-security-saml2-service-provider.gradle
index 58e4ed2aeb..a34613ba30 100644
--- a/saml2/saml2-service-provider/spring-security-saml2-service-provider.gradle
+++ b/saml2/saml2-service-provider/spring-security-saml2-service-provider.gradle
@@ -1,6 +1,7 @@
 plugins {
 	id 'compile-warnings-error'
 	id 'javadoc-warnings-error'
+	id 'security-nullability'
 }
 
 apply plugin: 'io.spring.convention.spring-module'