Update README.md

- Nightly instructions

Author: vxbinaca

README.md

@@ -37,10 +37,15 @@ Then run:
    At a minimum Python 3.9 and up is required (latest Python preferred).
 
 ```
-   pipx install "yt-dlp[default,curl-cffi]"
-   pipx install internetarchive
-   pipx install tubeup
+   pipx install "yt-dlp[default,curl-cffi]" internetarchive tubeup
 ```
+To use a nightly yt-dlp build, inject it into your yt-dlp virtual environment:
+
+`pipx inject yt-dlp "yt-dlp[default,curl-cffi] @ https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/download/[NIGHTLY TAG]/yt-dlp.tar.gz" --force`
+
+Where `[NIGHTLY TAG]` would for example be `2025.10.11.232807` in [this yt-dlp release](https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2025.10.11.232807).
+
+Upgrades will take it to latest nightly, which yt-dlp releases with a stable tag (see notes about upgrading below).
 
 3. If you don't already have an Internet Archive account, [register for one](https://archive.org/account/login.createaccount.php) to give the script upload privileges.