diff --git a/background/background.ts b/background/background.ts
index 534c97e..3009b31 100644
--- a/background/background.ts
+++ b/background/background.ts
@@ -190,6 +190,7 @@ chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
             sendResponse(`done ${message['paperId']}`)
         } else {
             handleTabMessage(message, sender, sendResponse)
+            return true
         }
     } catch (err) {
         submitError({
diff --git a/content_scripts/content.ts b/content_scripts/content.ts
index cf3a9a7..f6ec6f4 100644
--- a/content_scripts/content.ts
+++ b/content_scripts/content.ts
@@ -110,7 +110,6 @@ function setup() {
         chrome.runtime.onMessage.addListener(
           (message, sender, sendResponse) => {
               try {
-                  window['labml_links'] = message
                   updateIndicator(message)
                   LOGGER.log('tab message', message)
                   sendResponse('got it')
diff --git a/content_scripts/papers.ts b/content_scripts/papers.ts
index 7a3302d..61d06d9 100644
--- a/content_scripts/papers.ts
+++ b/content_scripts/papers.ts
@@ -171,12 +171,15 @@ export function addIndicator(
 }
 
 export function updateIndicator(papers: { [link: string]: PaperModel }) {
+    let linksToSave: string[] = []
     for (let link of links) {
         if (papers[link.link] == null) {
             continue
         }
+        linksToSave.push(link.link)
 
         link.paper.loadFrom(papers[link.link])
         link.update()
     }
+    window['labml_links'] = linksToSave
 }
diff --git a/manifest.json b/manifest.json
index 98af252..1023fef 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "48": "assets/icon48.png",
         "128": "assets/icon128.png"
     },
-    "version": "1.1.0",
+    "version": "1.1.1",
     "description": "\uD83D\uDD0E  View information about research papers linked from websites you visit.",
     "background": {
         "service_worker": "js/background.js"
diff --git a/package-lock.json b/package-lock.json
index 9113569..8b081e4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "papers_extension",
-    "version": "1.1.0",
+    "version": "1.1.1",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "papers_extension",
-            "version": "1.1.0",
+            "version": "1.1.1",
             "devDependencies": {
                 "@types/chrome": "latest",
                 "copy-webpack-plugin": "^10.0.0",
diff --git a/package.json b/package.json
index dece027..2febda3 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
         "build": "webpack --config webpack/webpack.prod.js",
         "prepare": "husky install"
     },
-    "version": "1.1.0",
+    "version": "1.1.1",
     "lint-staged": {
         "**/*": ""
     }