diff --git a/app/models/alt_style.rb b/app/models/alt_style.rb
index 4ffdad3f..d017fac8 100644
--- a/app/models/alt_style.rb
+++ b/app/models/alt_style.rb
@@ -12,7 +12,6 @@ class AltStyle < ApplicationRecord
   validates :series_name, presence: true, allow_nil: true
   validates :thumbnail_url, presence: true
 
-  before_validation :infer_series_name, unless: :has_real_series_name?
   before_validation :infer_thumbnail_url, unless: :thumbnail_url?
 
   scope :matching_name, ->(series_name, color_name, species_name) {
@@ -74,19 +73,6 @@ class AltStyle < ApplicationRecord
     end
   end
 
-  # Until the end of 2024, assume new alt styles are from the "Nostalgic"
-  # series. That way, we can stop having to manually label them all as they
-  # come out and get modeled (TNT is prolific rn!), but we aren't gonna get too
-  # greedy and forget about this and use Nostalgic for some far-future thing,
-  # in ways that will certainly be fixable but would also be confusing and
-  # embarrassing.
-  NOSTALGIC_FINAL_DAY = Date.new(2024, 12, 31)
-  def infer_series_name
-    if Date.today <= NOSTALGIC_FINAL_DAY
-      self.series_name = "Nostalgic"
-    end
-  end
-
   # At time of writing, most batches of Alt Styles thumbnails used a simple
   # pattern for the item thumbnail URL, but that's not always the case anymore.
   # For now, let's keep using this format as the default value when creating a