diff --git a/ClientSamlPOST/pom.xml b/ClientSamlPOST/pom.xml
index c8ab122..216cb7c 100644
--- a/ClientSamlPOST/pom.xml
+++ b/ClientSamlPOST/pom.xml
@@ -61,7 +61,7 @@
 <dependency>
     <groupId>org.apache.santuario</groupId>
     <artifactId>xmlsec</artifactId>
-    <version>2.1.1</version>
+    <version>2.1.7</version>
 </dependency>
 <!-- https://mvnrepository.com/artifact/org.opensaml/xmltooling -->
 <dependency>