diff --git a/core/pom.xml b/core/pom.xml
index 8a1cc7fe63..01732c461a 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -280,7 +280,7 @@
     <dependency>
       <groupId>org.kohsuke.stapler</groupId>
       <artifactId>stapler</artifactId>
-      <version>1.78</version>
+      <version>1.79</version>
     </dependency>
     <dependency>
       <!-- until the next rev of stapler picks up localizer 1.5 -->
diff --git a/core/src/main/java/hudson/PluginManager.java b/core/src/main/java/hudson/PluginManager.java
index dea81cc1fe..f3892c6b71 100644
--- a/core/src/main/java/hudson/PluginManager.java
+++ b/core/src/main/java/hudson/PluginManager.java
@@ -26,6 +26,7 @@ import org.apache.commons.fileupload.FileItem;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;
 import org.kohsuke.stapler.QueryParameter;
+import org.kohsuke.stapler.Stapler;
 
 /**
  * Manages {@link PluginWrapper}s.
@@ -70,6 +71,9 @@ public final class PluginManager extends AbstractModelObject {
 
     public PluginManager(ServletContext context) {
         this.context = context;
+        // JSON binding needs to be able to see all the classes from all the plugins
+        Stapler.setClassLoader(context,uberClassLoader);
+
         rootDir = new File(Hudson.getInstance().getRootDir(),"plugins");
         if(!rootDir.exists())
             rootDir.mkdirs();