diff --git a/pom.xml b/pom.xml
index c0a8aca..f9bfce9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -179,7 +179,7 @@
     <dependency>
       <groupId>net.sourceforge.plantuml</groupId>
       <artifactId>plantuml</artifactId>
-      <version>1.2018.1</version>
+      <version>1.2018.2</version>
     </dependency>
     <dependency>
       <groupId>javax.servlet</groupId>
diff --git a/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java b/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java
index e9337b7..cafe2b4 100644
--- a/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java
+++ b/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java
@@ -85,7 +85,8 @@ class DiagramResponse {
         if (StringUtils.isDiagramCacheable(uml)) {
             addHeaderForCache(blockUml);
         }
-        reader.outputImage(response.getOutputStream(), new FileFormatOption(format, false));
+        final Diagram diagram = blockUml.getDiagram();
+        final ImageData result = diagram.exportDiagram(response.getOutputStream(), idx, new FileFormatOption(format));
     }
 
     private boolean notModified(BlockUml blockUml) {