diff --git a/pass-deposit-services/pom.xml b/pass-deposit-services/pom.xml
index dbe3a480..c26cd8d7 100644
--- a/pass-deposit-services/pom.xml
+++ b/pass-deposit-services/pom.xml
@@ -60,7 +60,6 @@
     <okhttp.version>4.12.0</okhttp.version>
     <guava.version>33.3.1-jre</guava.version>
     <xmlunit.version>2.10.0</xmlunit.version>
-    <xstream.version>1.4.20</xstream.version>
     <commons-codec.version>1.17.1</commons-codec.version>
     <sword2-client.version>0.9.3</sword2-client.version>
     <mets-api.version>1.3</mets-api.version>
@@ -139,12 +138,6 @@
         <version>${guava.version}</version>
       </dependency>
 
-      <dependency>
-        <groupId>com.thoughtworks.xstream</groupId>
-        <artifactId>xstream</artifactId>
-        <version>${xstream.version}</version>
-      </dependency>
-
       <dependency>
         <groupId>org.xmlunit</groupId>
         <artifactId>xmlunit-core</artifactId>