diff --git a/pom.xml b/pom.xml
index 808e1dc9047a0740f1465aaf854f989d3f2e5d64..e88853e4cf3c15b3ad52310816632d07f476fa51 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,7 +14,7 @@
   <description>DCAT catalog proxy</description>
   <properties>
     <java.version>1.8</java.version>
-    <jena.version>4.5.0</jena.version>
+    <jena.version>4.6.1</jena.version>
   </properties>
   <dependencies>
     <dependency>
@@ -61,16 +61,26 @@
     <dependency>
       <groupId>org.mock-server</groupId>
       <artifactId>mockserver-netty</artifactId>
-      <version>5.11.2</version>
+      <version>5.14.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.mock-server</groupId>
       <artifactId>mockserver-client-java</artifactId>
-      <version>5.11.2</version>
+      <version>5.14.0</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
+  <dependencyManagement>
+    <dependencies>
+      <!-- https://mvnrepository.com/artifact/org.yaml/snakeyaml -->
+      <dependency>
+        <groupId>org.yaml</groupId>
+        <artifactId>snakeyaml</artifactId>
+        <version>1.32</version>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
   <build>
     <plugins>
       <plugin>
@@ -148,7 +158,7 @@
         <version>7.1.0</version>
         <configuration>
           <suppressionFiles>
-                 <suppressionFile>owasp-suppressions.xml</suppressionFile>
+            <suppressionFile>owasp-suppressions.xml</suppressionFile>
           </suppressionFiles>
           <failBuildOnCVSS>8</failBuildOnCVSS>
           <assemblyAnalyzerEnabled>false</assemblyAnalyzerEnabled>
@@ -166,7 +176,6 @@
         <groupId>com.github.spotbugs</groupId>
         <artifactId>spotbugs-maven-plugin</artifactId>
         <version>4.5.3.0</version>
-        
       </plugin>
     </plugins>
   </build>