diff --git a/priv/ingest_repo/migrations/20241104082248_remap_sources_v2.exs b/priv/ingest_repo/migrations/20241104082248_remap_sources_v2.exs
new file mode 100644
index 000000000000..3995af199440
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+++ b/priv/ingest_repo/migrations/20241104082248_remap_sources_v2.exs
@@ -0,0 +1,245 @@
+defmodule Plausible.IngestRepo.Migrations.RemapSourcesV2 do
+  use Ecto.Migration
+
+  @mappings %{
+    # UTM sources
+    "fb" => "Facebook",
+    "fb-ads" => "Facebook",
+    "fbads" => "Facebook",
+    "fbad" => "Facebook",
+    "facebook-ads" => "Facebook",
+    "facebook_ads" => "Facebook",
+    "fcb" => "Facebook",
+    "facebook_ad" => "Facebook",
+    "facebook_feed_ad" => "Facebook",
+    "ig" => "Instagram",
+    "yt" => "Youtube",
+    "yt-ads" => "Youtube",
+    "reddit-ads" => "Reddit",
+    "google_ads" => "Google",
+    "google-ads" => "Google",
+    "googleads" => "Google",
+    "gads" => "Google",
+    "google ads" => "Google",
+    "adwords" => "Google",
+    "twitter-ads" => "Twitter",
+    "tiktokads" => "TikTok",
+    "tik.tok" => "TikTok",
+    "perplexity" => "Perplexity",
+    "linktree" => "Linktree",
+
+    # Referrers
+    "android-app://com.reddit.frontpage" => "Reddit",
+    "perplexity.ai" => "Perplexity",
+    "search.brave.com" => "Brave",
+    "yandex.com.tr" => "Yandex",
+    "yandex.kz" => "Yandex",
+    "ya.ru" => "Yandex",
+    "yandex.uz" => "Yandex",
+    "yandex.fr" => "Yandex",
+    "yandex.eu" => "Yandex",
+    "yandex.tm" => "Yandex",
+    "discord.com" => "Discord",
+    "t.me" => "Telegram",
+    "webk.telegram.org" => "Telegram",
+    "sogou.com" => "Sogou",
+    "m.sogou.com" => "Sogou",
+    "wap.sogou.com" => "Sogou",
+    "canary.discord.com" => "Discord",
+    "ptb.discord.com" => "Discord",
+    "discordapp.com" => "Discord",
+    "linktr.ee" => "Linktree",
+    "baidu.com" => "Baidu",
+    "statics.teams.cdn.office.net" => "Microsoft Teams",
+    "ntp.msn.com" => "Bing",
+    "en.wikipedia.org" => "Wikipedia",
+    "en.m.wikipedia.org" => "Wikipedia",
+    "de.wikipedia.org" => "Wikipedia",
+    "de.m.wikipedia.org" => "Wikipedia",
+    "fr.wikipedia.org" => "Wikipedia",
+    "ru.wikipedia.org" => "Wikipedia",
+    "fr.m.wikipedia.org" => "Wikipedia",
+    "es.wikipedia.org" => "Wikipedia",
+    "ja.wikipedia.org" => "Wikipedia",
+    "nl.wikipedia.org" => "Wikipedia",
+    "ru.m.wikipedia.org" => "Wikipedia",
+    "da.m.wikipedia.org" => "Wikipedia",
+    "no.wikipedia.org" => "Wikipedia",
+    "es.m.wikipedia.org" => "Wikipedia",
+    "it.wikipedia.org" => "Wikipedia",
+    "nl.m.wikipedia.org" => "Wikipedia",
+    "da.wikipedia.org" => "Wikipedia",
+    "sv.wikipedia.org" => "Wikipedia",
+    "it.m.wikipedia.org" => "Wikipedia",
+    "zh.wikipedia.org" => "Wikipedia",
+    "sv.m.wikipedia.org" => "Wikipedia",
+    "no.m.wikipedia.org" => "Wikipedia",
+    "fi.m.wikipedia.org" => "Wikipedia",
+    "fi.wikipedia.org" => "Wikipedia",
+    "ca.wikipedia.org" => "Wikipedia",
+    "ja.m.wikipedia.org" => "Wikipedia",
+    "pt.wikipedia.org" => "Wikipedia",
+    "pl.wikipedia.org" => "Wikipedia",
+    "pt.m.wikipedia.org" => "Wikipedia",
+    "cs.wikipedia.org" => "Wikipedia",
+    "zh.m.wikipedia.org" => "Wikipedia",
+    "ca.m.wikipedia.org" => "Wikipedia",
+    "pl.m.wikipedia.org" => "Wikipedia",
+    "cs.m.wikipedia.org" => "Wikipedia",
+    "is.wikipedia.org" => "Wikipedia",
+    "ko.wikipedia.org" => "Wikipedia",
+    "uk.wikipedia.org" => "Wikipedia",
+    "is.m.wikipedia.org" => "Wikipedia",
+    "he.m.wikipedia.org" => "Wikipedia",
+    "tr.wikipedia.org" => "Wikipedia",
+    "he.wikipedia.org" => "Wikipedia",
+    "id.m.wikipedia.org" => "Wikipedia",
+    "tr.m.wikipedia.org" => "Wikipedia",
+    "et.wikipedia.org" => "Wikipedia",
+    "fa.m.wikipedia.org" => "Wikipedia",
+    "uk.m.wikipedia.org" => "Wikipedia",
+    "simple.wikipedia.org" => "Wikipedia",
+    "ko.m.wikipedia.org" => "Wikipedia",
+    "id.wikipedia.org" => "Wikipedia",
+    "hr.m.wikipedia.org" => "Wikipedia",
+    "simple.m.wikipedia.org" => "Wikipedia",
+    "vi.wikipedia.org" => "Wikipedia",
+    "el.wikipedia.org" => "Wikipedia",
+    "hr.wikipedia.org" => "Wikipedia",
+    "sk.wikipedia.org" => "Wikipedia",
+    "hu.wikipedia.org" => "Wikipedia",
+    "hu.m.wikipedia.org" => "Wikipedia",
+    "fa.wikipedia.org" => "Wikipedia",
+    "el.m.wikipedia.org" => "Wikipedia",
+    "arz.m.wikipedia.org" => "Wikipedia",
+    "th.m.wikipedia.org" => "Wikipedia",
+    "ta.m.wikipedia.org" => "Wikipedia",
+    "ga.wikipedia.org" => "Wikipedia",
+    "et.m.wikipedia.org" => "Wikipedia",
+    "vi.m.wikipedia.org" => "Wikipedia",
+    "ro.wikipedia.org" => "Wikipedia",
+    "ro.m.wikipedia.org" => "Wikipedia",
+    "ms.m.wikipedia.org" => "Wikipedia",
+    "bs.m.wikipedia.org" => "Wikipedia",
+    "az.m.wikipedia.org" => "Wikipedia",
+    "bg.m.wikipedia.org" => "Wikipedia",
+    "nn.wikipedia.org" => "Wikipedia",
+    "bg.wikipedia.org" => "Wikipedia",
+    "ml.m.wikipedia.org" => "Wikipedia",
+    "bn.m.wikipedia.org" => "Wikipedia",
+    "sl.wikipedia.org" => "Wikipedia",
+    "nn.m.wikipedia.org" => "Wikipedia",
+    "sk.m.wikipedia.org" => "Wikipedia",
+    "ms.wikipedia.org" => "Wikipedia",
+    "uz.wikipedia.org" => "Wikipedia",
+    "th.wikipedia.org" => "Wikipedia",
+    "sr.m.wikipedia.org" => "Wikipedia",
+    "hi.m.wikipedia.org" => "Wikipedia",
+    "eu.wikipedia.org" => "Wikipedia",
+    "uz.m.wikipedia.org" => "Wikipedia",
+    "sr.wikipedia.org" => "Wikipedia",
+    "lv.wikipedia.org" => "Wikipedia",
+    "la.wikipedia.org" => "Wikipedia",
+    "sl.m.wikipedia.org" => "Wikipedia",
+    "arz.wikipedia.org" => "Wikipedia",
+    "ta.wikipedia.org" => "Wikipedia",
+    "ka.m.wikipedia.org" => "Wikipedia",
+    "ga.m.wikipedia.org" => "Wikipedia",
+    "lt.wikipedia.org" => "Wikipedia",
+    "lv.m.wikipedia.org" => "Wikipedia",
+    "kk.m.wikipedia.org" => "Wikipedia",
+    "lt.m.wikipedia.org" => "Wikipedia",
+    "ar.wikipedia.org" => "Wikipedia",
+    "eo.wikipedia.org" => "Wikipedia",
+    "sw.m.wikipedia.org" => "Wikipedia",
+    "sh.wikipedia.org" => "Wikipedia",
+    "bs.wikipedia.org" => "Wikipedia",
+    "ml.wikipedia.org" => "Wikipedia",
+    "hy.wikipedia.org" => "Wikipedia",
+    "ka.wikipedia.org" => "Wikipedia",
+    "hi.wikipedia.org" => "Wikipedia",
+    "la.m.wikipedia.org" => "Wikipedia",
+    "bn.wikipedia.org" => "Wikipedia",
+    "ur.m.wikipedia.org" => "Wikipedia",
+    "sh.m.wikipedia.org" => "Wikipedia",
+    "az.wikipedia.org" => "Wikipedia",
+    "si.m.wikipedia.org" => "Wikipedia",
+    "sq.wikipedia.org" => "Wikipedia",
+    "zh-yue.wikipedia.org" => "Wikipedia",
+    "ckb.m.wikipedia.org" => "Wikipedia",
+    "kn.wikipedia.org" => "Wikipedia",
+    "lij.wikipedia.org" => "Wikipedia",
+    "fy.wikipedia.org" => "Wikipedia",
+    "lij.m.wikipedia.org" => "Wikipedia",
+    "hy.m.wikipedia.org" => "Wikipedia",
+    "mn.m.wikipedia.org" => "Wikipedia",
+    "ar.m.wikipedia.org" => "Wikipedia",
+    "tl.wikipedia.org" => "Wikipedia",
+    "eu.m.wikipedia.org" => "Wikipedia",
+    "fo.wikipedia.org" => "Wikipedia",
+    "mn.wikipedia.org" => "Wikipedia",
+    "mr.wikipedia.org" => "Wikipedia",
+    "zh-classical.wikipedia.org" => "Wikipedia",
+    "cy.wikipedia.org" => "Wikipedia",
+    "olo.wikipedia.org" => "Wikipedia",
+    "te.m.wikipedia.org" => "Wikipedia",
+    "mk.wikipedia.org" => "Wikipedia",
+    "dz.wikipedia.org" => "Wikipedia",
+    "as.m.wikipedia.org" => "Wikipedia",
+    "szl.m.wikipedia.org" => "Wikipedia",
+    "oc.wikipedia.org" => "Wikipedia",
+    "rw.m.wikipedia.org" => "Wikipedia",
+    "tl.m.wikipedia.org" => "Wikipedia",
+    "si.wikipedia.org" => "Wikipedia",
+    "nostalgia.wikipedia.org" => "Wikipedia",
+    "lrc.wikipedia.org" => "Wikipedia",
+    "eo.m.wikipedia.org" => "Wikipedia",
+    "ky.wikipedia.org" => "Wikipedia",
+    "new.wikipedia.org" => "Wikipedia",
+    "be.wikipedia.org" => "Wikipedia",
+    "bcl.m.wikipedia.org" => "Wikipedia",
+    "sq.m.wikipedia.org" => "Wikipedia",
+    "am.wikipedia.org" => "Wikipedia",
+    "nds-nl.m.wikipedia.org" => "Wikipedia",
+    "gu.m.wikipedia.org" => "Wikipedia",
+    "bjn.wikipedia.org" => "Wikipedia",
+    "pa.m.wikipedia.org" => "Wikipedia",
+    "sa.m.wikipedia.org" => "Wikipedia",
+    "tt.wikipedia.org" => "Wikipedia",
+    "qu.wikipedia.org" => "Wikipedia",
+    "be-tarask.wikipedia.org" => "Wikipedia",
+    "mg.m.wikipedia.org" => "Wikipedia",
+    "dga.m.wikipedia.org" => "Wikipedia",
+    "bat-smg.wikipedia.org" => "Wikipedia",
+    "sw.wikipedia.org" => "Wikipedia",
+    "wuu.wikipedia.org" => "Wikipedia",
+    "ne.m.wikipedia.org" => "Wikipedia",
+    "yi.m.wikipedia.org" => "Wikipedia",
+    "vec.wikipedia.org" => "Wikipedia",
+    "be-tarask.m.wikipedia.org" => "Wikipedia",
+    "crh.wikipedia.org" => "Wikipedia"
+  }
+
+  def up do
+    {keys, values} = Enum.unzip(@mappings)
+
+    events_sql = """
+      ALTER TABLE events_v2
+      UPDATE referrer_source = transform(lower(referrer_source), {$0:Array(String)}, {$1:Array(String)})
+      WHERE lower(referrer_source) IN {$0:Array(String)}
+    """
+
+    sessions_sql = """
+      ALTER TABLE sessions_v2
+      UPDATE referrer_source = transform(lower(referrer_source), {$0:Array(String)}, {$1:Array(String)})
+      WHERE lower(referrer_source) IN {$0:Array(String)}
+    """
+
+    execute(fn -> repo().query!(events_sql, [keys, values]) end)
+    execute(fn -> repo().query!(sessions_sql, [keys, values]) end)
+  end
+
+  def down do
+    raise "irreversible"
+  end
+end