--- a/browser/components/extensions/ext-devtools-network.js
+++ b/browser/components/extensions/ext-devtools-network.js
@@ -16,20 +16,20 @@ extensions.registerSchemaAPI("devtools.n
       network: {
         onNavigated: new SingletonEventManager(context, "devtools.onNavigated", fire => {
           let listener = (event, data) => {
             fire.async(data.url);
           };
 
           let targetPromise = getDevToolsTargetForContext(context);
           targetPromise.then(target => {
-            target.on("will-navigate", listener);
+            target.on("navigate", listener);
           });
           return () => {
             targetPromise.then(target => {
-              target.off("will-navigate", listener);
+              target.off("navigate", listener);
             });
           };
         }).api(),
       },
     },
   };
 });