diff --git a/script/migrations/migrate_to_flat_card_urls.rb b/script/migrations/migrate_to_flat_card_urls.rb
new file mode 100755
index 000000000..dc6bdb1cc
--- /dev/null
+++ b/script/migrations/migrate_to_flat_card_urls.rb
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+
+require_relative "../config/environment"
+
+def replace_url(string)
+  string.gsub(%r{/collections/\d+/cards/(\d+)}) do
+    "/cards/#{$1}"
+  end
+end
+
+def fix_rich_text(rich_text)
+  original_html = rich_text.body_before_type_cast
+  new_html = replace_url(original_html)
+  if original_html != new_html
+    rich_text.update_columns(body: new_html)
+  end
+end
+
+ApplicationRecord.with_each_tenant do
+  ActionText::RichText.where(record_type: "Card", name: "description").find_each do |rich_text|
+    fix_rich_text rich_text
+  end
+
+  ActionText::RichText.where(record_type: "Comment", name: "body").find_each do |rich_text|
+    fix_rich_text rich_text
+  end
+end