diff --git a/nflow-engine/src/main/java/io/nflow/engine/service/WorkflowDefinitionService.java b/nflow-engine/src/main/java/io/nflow/engine/service/WorkflowDefinitionService.java
index cb27f7928..41706a00f 100644
--- a/nflow-engine/src/main/java/io/nflow/engine/service/WorkflowDefinitionService.java
+++ b/nflow-engine/src/main/java/io/nflow/engine/service/WorkflowDefinitionService.java
@@ -101,7 +101,7 @@ private void initNonSpringWorkflowDefinitions() throws IOException, ReflectiveOp
         logger.info("Preparing workflow {}", row);
         @SuppressWarnings("unchecked")
         Class<WorkflowDefinition<? extends WorkflowState>> clazz = (Class<WorkflowDefinition<? extends WorkflowState>>) Class.forName(row);
-        addWorkflowDefinition(clazz.newInstance());
+        addWorkflowDefinition(clazz.getDeclaredConstructor().newInstance());
       }
     }
   }
diff --git a/nflow-jetty/pom.xml b/nflow-jetty/pom.xml
index f1c6f9ef2..91102aedd 100644
--- a/nflow-jetty/pom.xml
+++ b/nflow-jetty/pom.xml
@@ -81,6 +81,14 @@
       <groupId>org.apache.cxf</groupId>
       <artifactId>cxf-rt-rs-service-description-swagger</artifactId>
     </dependency>
+    <dependency>
+      <groupId>javax.xml.bind</groupId>
+      <artifactId>jaxb-api</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>javax.xml.ws</groupId>
+      <artifactId>jaxws-api</artifactId>
+    </dependency>
     <dependency>
       <groupId>io.swagger</groupId>
       <artifactId>swagger-jaxrs</artifactId>
diff --git a/nflow-metrics/pom.xml b/nflow-metrics/pom.xml
index cefecd08e..f3fc043f7 100644
--- a/nflow-metrics/pom.xml
+++ b/nflow-metrics/pom.xml
@@ -66,5 +66,9 @@
       <groupId>com.google.code.findbugs</groupId>
       <artifactId>annotations</artifactId>
     </dependency>
+    <dependency>
+      <groupId>javax.annotation</groupId>
+      <artifactId>javax.annotation-api</artifactId>
+    </dependency>
   </dependencies>
 </project>
diff --git a/pom.xml b/pom.xml
index 3b808e614..2fcbb3452 100644
--- a/pom.xml
+++ b/pom.xml
@@ -113,8 +113,11 @@
     <jackson.version>2.9.2</jackson.version>
     <jackson-databind.version>2.9.2</jackson-databind.version>
     <javassist.version>3.21.0-GA</javassist.version>
+    <javax.annotation-api.version>1.3.1</javax.annotation-api.version>
     <javax.servlet-api.version>3.1.0</javax.servlet-api.version>
     <javax.ws.rs.version>2.1</javax.ws.rs.version>
+    <jaxb-api.version>2.3.0</jaxb-api.version>
+    <jaxws-api.version>2.3.0</jaxws-api.version>
     <jersey.version>2.26</jersey.version>
     <jetty.version>9.4.8.v20171121</jetty.version>
     <jodatime.version>2.9.9</jodatime.version>
@@ -645,6 +648,21 @@
         <artifactId>jackson-datatype-joda</artifactId>
         <version>${jackson.version}</version>
       </dependency>
+      <dependency>
+        <groupId>javax.xml.bind</groupId>
+        <artifactId>jaxb-api</artifactId>
+        <version>${jaxb-api.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>javax.xml.ws</groupId>
+        <artifactId>jaxws-api</artifactId>
+        <version>${jaxws-api.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>javax.annotation</groupId>
+        <artifactId>javax.annotation-api</artifactId>
+        <version>${javax.annotation-api.version}</version>
+      </dependency>
       <!-- netty -->
       <dependency>
         <groupId>io.projectreactor.ipc</groupId>