diff --git a/blocklists/mastodon/README.md b/blocklists/mastodon/README.md
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--- a/blocklists/mastodon/README.md
+++ b/blocklists/mastodon/README.md
@@ -2,10 +2,9 @@
 
 **NOTE:** If importing these files for Mastodon, be sure to use the files in the `mastodon` folder.
 
-* `_unified_tier0_blocklist.csv` - Combines blocks from all T0 sources (Seirdy, Gardenfence, Council) into a unified Tier 0 file.
+* `_unified_tier0_blocklist.csv` - Combines blocks from all T0 sources (Seirdy, Gardenfence, IFTAS DNI) into a unified Tier 0 file.
 * `seirdy-tier0.csv` - The original Tier0 file. Algorithmic *and* curated. See Seirdy's [Fediverse Blocklists](https://seirdy.one/posts/2023/05/02/fediverse-blocklists/) for notes about the process behind creating it.
 * `gardenfence.csv` - A mirror of the [Gardenfence](https://gardenfence.github.io/) Tier 0 file.
-* `birdsite.csv` - All the Birdsite Live Blocks. This file is provided separately as a convenience.
 * `dni.csv` - IFTAS Do Not Interact (DNI).
 
 **Subfolders:**