diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b79574..8a77550 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,13 @@
 # Changelog
 
+## 3.0.0
+
+- Port to JupyterLab 3 (#29)
+- Fixes comment duplication when code mirror viewport is updated (#43)
+
 ## 2.1.0 (2021-04-05)
 
-- Refactor code with latest @jupyterlab/git (more shared code) #39
+- Refactor code with latest @jupyterlab/git (more shared code) (#39)
 
 ## 2.0.1 (2021-03-17)
 
diff --git a/README.md b/README.md
index 63b8677..21603a0 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 
 A JupyterLab extension for reviewing pull requests.
 
-![](gifs/demo.gif)
+![demo](https://raw.githubusercontent.com/jupyterlab/pull-requests/master/gifs/demo.gif)
 
 For now, it supports GitHub and GitLab providers.
 
@@ -94,6 +94,14 @@ This extension as [server settings](http://jupyter-notebook.readthedocs.io/en/st
 -   **PRConfig.provider**: `github` (default) or `gitlab`
 -   **PRConfig.api_base_url**: Provider API base url (default to `https://api.github.com` except if provider is _gitlab_ then it defaults to `https://gitlab.com/api/v4/`)
 
+## Troubleshooting
+
+- If you are seeing the following error `[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain` and the certificates are installed on your machine, you will need to set the `SSL_CERT_FILE` environment variable to point to your system certificates bundle. For example:
+
+```
+export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
+```
+
 ## Development
 
 ### Contributing
diff --git a/package.json b/package.json
index b4ae88f..ab9e287 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jupyterlab/pullrequests",
-  "version": "3.0.0-alpha.0",
+  "version": "3.0.0-beta.0",
   "description": "Pull Requests for JupyterLab",
   "keywords": [
     "jupyter",
@@ -71,7 +71,7 @@
     "json-source-map": "^0.6.1",
     "moment": "^2.24.0",
     "nbdime": "^6.1.0-beta.1",
-    "nbdime-jupyterlab": "2.1.0-beta.1",
+    "nbdime-jupyterlab": "^2.1.0-beta.1",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
     "react-spinners": "^0.5.12"
@@ -125,6 +125,7 @@
     "outputDir": "jupyterlab_pullrequests/labextension",
     "sharedPackages": {
       "@jupyterlab/git": {
+        "bundled": false,
         "singleton": true
       },
       "codemirror": {