diff --git a/gradle/plugins/conventions-plugin/src/main/java/org/springframework/ws/gradle/conventions/JavaBasePluginConventions.java b/gradle/plugins/conventions-plugin/src/main/java/org/springframework/ws/gradle/conventions/JavaBasePluginConventions.java
index a74d69ff..39cf9b8d 100644
--- a/gradle/plugins/conventions-plugin/src/main/java/org/springframework/ws/gradle/conventions/JavaBasePluginConventions.java
+++ b/gradle/plugins/conventions-plugin/src/main/java/org/springframework/ws/gradle/conventions/JavaBasePluginConventions.java
@@ -43,6 +43,14 @@ class JavaBasePluginConventions {
 
 	private void configureRepositories(Project project) {
 		project.getRepositories().mavenCentral();
+		project.getRepositories().maven((repository) -> {
+			repository.setName("Shibboleth Releases");
+			repository.setUrl("https://build.shibboleth.net/nexus/content/repositories/releases");
+			repository.content((content) -> {
+				content.includeGroup("org.opensaml");
+				content.includeGroup("net.shibboleth");
+			});
+		});
 		String version = project.getVersion().toString();
 		if (version.contains("-")) {
 			project.getRepositories().maven((repository) -> {
diff --git a/spring-ws-platform/build.gradle b/spring-ws-platform/build.gradle
index 73059d01..ec927473 100644
--- a/spring-ws-platform/build.gradle
+++ b/spring-ws-platform/build.gradle
@@ -34,7 +34,7 @@ dependencies {
 		api("org.apache.commons:commons-collections4:4.4")
 		api("org.apache.httpcomponents.client5:httpclient5:5.2.3")
 		api("org.apache.httpcomponents:httpclient:4.5.14")
-		api("org.apache.santuario:xmlsec:3.0.4")
+		api("org.apache.santuario:xmlsec:4.0.3")
 		api("org.apache.wss4j:wss4j-ws-security-dom:4.0.0")
 		api("org.apache.ws.xmlschema:xmlschema-core:2.3.1")
 		api("org.aspectj:aspectjrt:1.9.22")