diff --git a/docs/migrate.md b/docs/migrate.md
index ccf17c4f7..11c95c70a 100644
--- a/docs/migrate.md
+++ b/docs/migrate.md
@@ -1,4 +1,4 @@
-# 🚚 Migrating from Misskey/FoundKey to Iceshrimp
+# 🚚 Migrating from Misskey/FoundKey/Firefish to Iceshrimp
 
 All the guides below assume you're starting in the root of the repo directory.
 
@@ -7,61 +7,6 @@ All the guides below assume you're starting in the root of the repo directory.
 - **Ensure you have stopped all master and worker processes of Misskey.**
 - **Ensure you have backups of the database before performing any commands.**
 
-## Misskey v13 and above
-
-Tested with Misskey v13.11.3.
-
-If your Misskey v13 is older, we recommend updating your Misskey to v13.11.3.
-
-```sh
-wget -O mkv13.patch https://iceshrimp.dev/iceshrimp/iceshrimp/raw/branch/dev/docs/mkv13.patch
-wget -O mkv13_restore.patch https://iceshrimp.dev/iceshrimp/iceshrimp/raw/branch/dev/docs/mkv13_restore.patch
-git apply mkv13.patch mkv13_restore.patch
-
-cd packages/backend
-
-LINE_NUM="$(pnpm typeorm migration:show -d ormconfig.js | grep -n activeEmailValidation1657346559800 | cut -d ':' -f 1)"
-NUM_MIGRATIONS="$(pnpm typeorm migration:show -d ormconfig.js | tail -n+"$LINE_NUM" | grep '\[X\]' | wc -l)"
-
-for i in $(seq 1 $NUM_MIGRATIONS); do pnpm typeorm migration:revert -d ormconfig.js; done
-
-cd ../../
-
-git remote set-url origin https://iceshrimp.dev/iceshrimp/iceshrimp.git
-git fetch origin
-git stash push
-rm -rf fluent-emojis misskey-assets
-git checkout v2023.11.4 # or any other tag or dev
-wget -O renote_muting.patch https://iceshrimp.dev/iceshrimp/iceshrimp/raw/branch/dev/docs/renote_muting.patch
-git apply renote_muting.patch
-
-# build and migrate using preferred method
-git stash push
-```
-
-Depending on the version you're migrating from, you may have to open Postgres with `psql -d your_database` and run the following commands:
-
-```sql
-ALTER TABLE "meta" ADD COLUMN "disableLocalTimeline" boolean DEFAULT false;
-ALTER TABLE "meta" ADD COLUMN "disableGlobalTimeline" boolean DEFAULT false;
-ALTER TABLE "meta" ADD COLUMN "localDriveCapacityMb" integer DEFAULT 512;
-ALTER TABLE "meta" ADD COLUMN "remoteDriveCapacityMb" integer DEFAULT 128;
-ALTER TABLE "user" ADD COLUMN "isSilenced" boolean DEFAULT false;
-ALTER TABLE "user" ADD COLUMN "isAdmin" boolean DEFAULT false;
-ALTER TABLE "user" ADD COLUMN "isModerator" boolean DEFAULT false;
-ALTER TABLE "user" ADD COLUMN "remoteDriveCapacityMb" integer DEFAULT 128;
-ALTER TABLE "user" ADD COLUMN "driveCapacityOverrideMb" integer DEFAULT 128;
-ALTER TABLE "instance" ADD COLUMN "caughtAt" date;
-ALTER TABLE "instance" ADD COLUMN "latestRequestSentAt" date;
-ALTER TABLE "instance" ADD COLUMN "latestStatus" character varying(512);
-ALTER TABLE "instance" ADD COLUMN "lastCommunicatedAt" date;
-```
-
-then quit with `\q`, and restart Iceshrimp.
-
-Note: Ignore errors of `column "xxx" of relation "xxx" already exists`.
-
-If no other errors happened, your Iceshrimp is ready to launch!
 
 ## Misskey v12.119 and before
 
@@ -73,6 +18,9 @@ git checkout v2023.11.4 # or any other tag or dev
 # build and run migrations using preferred method
 ```
 
+> **Note**
+> Migrating from Misskey v13 and its forks (Sharkey et al) is unsupported due to database schema changes.
+
 ## FoundKey
 
 ```sh