diff --git a/CHANGELOG.md b/CHANGELOG.md
index df19a2e..0f30d31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+**12 JUL 2023** VERSION 4.1
+
+**Nitter has recently added a change that highlights tweets that are part of a thread. Twoot cannot handle this modification yet therefore TWEETS THAT ARE PART OF A THREAD ARE CURRENTLY IGNORED.** A warning message is added to the log file instead.
+
+**A new dependency to python module `pytz` has been added**. Please run `pip install pytz`
+in your environment to install it.
+
+* Added option to display timestamp of the original tweet in toot
+* Tweaked list of nitter instances
+
 **28 JUN 2023** VERSION 4.0
 
 * Added option to update avatar and banner pictures on profile if changed on Twitter
diff --git a/README.md b/README.md
index a107969..243fb7d 100644
--- a/README.md
+++ b/README.md
@@ -3,18 +3,19 @@
 Twoot is a python script that mirrors tweets from a twitter account to a Mastodon account.
 It is simple to set-up on a local machine, configurable and feature-rich.
 
-**12 JUL 2023** VERSION 4.1
+**14 JUL 2023** VERSION 4.2
 
-**Nitter has recently added a change that highlights tweets that are part of a thread. Twoot
-cannot handle this modification yet therefore TWEETS THAT ARE PART OF A THREAD ARE CURRENTLY
-IGNORED.** A warning message is added to the log file instead.
-An update is being worked on. Stay tuned.
+Twoot can now handle threads. All tweets can again be uploaded on Mastodon. Tweets in a threads are
+displayed in reverse chronological order in the main timeline (first tweet on top) to improve readability.
 
-**A new dependency to python module `pytz` has been added**. Please run `pip install pytz`
-in your environment to install it.
+*When several toots are posted in the same run of toot it is possible that these toots do not appear in
+chronological order on the timeline. If it is the case, try setting `upload_pause` to 3-5 seconds in
+your config file to slow down the rate at which toots are uploaded.*
+
+A list of nitter instances to use can now be specified in the config file
+e.g. `nitter_instances = ["nitter.nl", "nitter.fdn.fr"]`.
+If none is specified, a built-in list of 2-3 known good instances is used as before.
 
-* Added option to display timestamp of the original tweet in toot
-* Tweaked list of nitter instances
 
 > Previous updates can be found in CHANGELOG.
 
@@ -136,7 +137,7 @@ No limitation is applied to the number of toots uploaded if `-c` is not specifie
 
 Make sure python3 is installed.
 
-Twoot depends on `beautifulsoup4` and `Mastodon.py` python modules. Additionally, if you are using
+Twoot depends on `beautifulsoup4`, `Mastodon.py` and `pytz` python modules. Additionally, if you are using
 a version of python < 3.11 you also need to install the `tomli` module.
 
 **Only If you plan to download videos** with the `-v` switch, are the additional dependencies required:
@@ -145,7 +146,7 @@ a version of python < 3.11 you also need to install the `tomli` module.
 * [ffmpeg](https://ffmpeg.org/download.html) (installed with the package manager of your distribution)
 
 ```sh
-pip install beautifulsoup4 Mastodon.py youtube-dl2
+pip install beautifulsoup4 Mastodon.py youtube-dl2 pytz
 ```
 
 In your user folder, execute `git clone https://gitlab.com/jeancf/twoot.git`