diff --git a/Gemfile b/Gemfile
index a2fce9bad..c9fb824ba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -55,7 +55,7 @@ group :test do
   gem 'email_spec'
   gem 'faker'
   gem 'fake_stripe'
-  gem 'webdrivers','~> 5.0', require: false
+  gem 'webdrivers','>= 5.2.0', require: false
   gem 'rspec-json_expectations'
   gem 'simplecov'
   gem 'timecop'
diff --git a/Gemfile.lock b/Gemfile.lock
index ea37211ef..c961ec826 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,7 +65,6 @@ GEM
       xpath (~> 3.2)
     celluloid (0.16.0)
       timers (~> 4.0.0)
-    childprocess (4.1.0)
     chronic (0.10.2)
     coderay (1.1.2)
     concurrent-ruby (1.1.5)
@@ -171,7 +170,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
     mini_mime (1.0.2)
-    mini_portile2 (2.8.1)
+    mini_portile2 (2.8.5)
     minitest (5.14.0)
     moneta (1.0.0)
     multi_json (1.13.1)
@@ -179,8 +178,8 @@ GEM
     multipart-post (2.0.0)
     newrelic_rpm (5.0.0.342)
     nio4r (2.5.8)
-    nokogiri (1.14.2)
-      mini_portile2 (~> 2.8.0)
+    nokogiri (1.15.5)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     parallel (1.12.1)
     parser (3.2.2.0)
@@ -200,7 +199,7 @@ GEM
       nio4r (~> 2.0)
     puma-heroku (2.0.0)
       puma (>= 5.0, < 6.0)
-    racc (1.6.2)
+    racc (1.7.3)
     rack (1.6.12)
     rack-protection (1.5.5)
       rack
@@ -245,7 +244,7 @@ GEM
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)
       railties (>= 4.2.0, < 5.3)
-    rexml (3.2.5)
+    rexml (3.2.6)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -292,10 +291,10 @@ GEM
       tilt
     scout_apm (5.3.3)
       parser
-    selenium-webdriver (4.1.0)
-      childprocess (>= 0.5, < 5.0)
+    selenium-webdriver (4.9.0)
       rexml (~> 3.2, >= 3.2.5)
-      rubyzip (>= 1.2.2)
+      rubyzip (>= 1.2.2, < 3.0)
+      websocket (~> 1.0)
     simplecov (0.17.0)
       docile (~> 1.1)
       json (>= 1.8, < 3)
@@ -336,15 +335,16 @@ GEM
       binding_of_caller (>= 0.7.2)
       railties (>= 4.0)
       sprockets-rails (>= 2.0, < 4.0)
-    webdrivers (5.0.0)
+    webdrivers (5.3.1)
       nokogiri (~> 1.6)
       rubyzip (>= 1.3.0)
-      selenium-webdriver (~> 4.0)
+      selenium-webdriver (~> 4.0, < 4.11)
     webmock (3.10.0)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
     webrick (1.6.1)
+    websocket (1.2.10)
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.4)
@@ -417,7 +417,7 @@ DEPENDENCIES
   uglifier
   vcr
   web-console (~> 2.0)
-  webdrivers (~> 5.0)
+  webdrivers (>= 5.2.0)
   webmock
   where-or
   will_paginate
diff --git a/app/controllers/valid_vouchers_controller.rb b/app/controllers/valid_vouchers_controller.rb
index 0ed335da2..ee22328ca 100644
--- a/app/controllers/valid_vouchers_controller.rb
+++ b/app/controllers/valid_vouchers_controller.rb
@@ -32,10 +32,7 @@ def edit
   def update
     @valid_voucher = ValidVoucher.find(params[:id])
     args = params[:valid_voucher]
-    # max_sales_for_type if blank should be "infinity"
-    if args[:max_sales_for_type].blank?
-      args[:max_sales_for_type] = ValidVoucher::INFINITE
-    end
+    set_arg_defaults_if_blank!(args)
     if @valid_voucher.update_attributes(args)
       redirect_to edit_show_path(@valid_voucher.showdate.show), :notice => 'Update successful.'
     else
@@ -53,9 +50,9 @@ def create
     return redirect_to(back, :alert => t('season_setup.must_select_vouchertypes')) if vt.blank?
     vouchertypes = Vouchertype.find vt
     showdates = Showdate.find sd
-    # max_sales_for_type if blank should be "infinity"
-    args[:max_sales_for_type] = ValidVoucher::INFINITE if args[:max_sales_for_type].blank?
-
+    set_arg_defaults_if_blank!(args)
+    # min_sales_for_type if blank should default to 1
+    args[:min_sales_per_txn] = 1 if args[:min_sales_per_txn].blank?
     # params[:before_or_after] is either '+1' or '-1' to possibly negate minutes_before_curtain
     # (so the value stored is "Minutes before", but may be negative to indicate "minutes after")
     args[:before_showtime] = (params[:minutes_before].to_i * params[:before_or_after].to_i).minutes
@@ -82,4 +79,15 @@ def destroy
     end
   end
 
+  private
+
+  def set_arg_defaults_if_blank!(args)
+    # this should be done with strong params
+    # supply defaults for min/max_sales_for_type and max_sales_per_txn if blank
+    args[:min_sales_per_txn] = 1 if args[:min_sales_per_txn].blank?
+    [:max_sales_for_type, :max_sales_per_txn].each do |attrib|
+      args[attrib] = ValidVoucher::INFINITE if args[attrib].blank?
+    end
+  end
+
 end
diff --git a/app/models/order.rb b/app/models/order.rb
index 4263b7a1e..df8243e47 100644
--- a/app/models/order.rb
+++ b/app/models/order.rb
@@ -149,7 +149,8 @@ def add_tickets_from_params(valid_voucher_params, customer, promo_code: '', seat
       seats = seats2.slice!(0,qty)
       # is this order-placer allowed to exercise this redemption?
       redemption = vv.adjust_for_customer
-      if (vv.customer.try(:is_boxoffice) || redemption.max_sales_for_this_patron >= qty)
+      if (vv.customer.try(:is_boxoffice) || # boxoffice can do anything
+          redemption.max_sales_for_this_patron >= qty) # there's enough seats for this patron's limit
         add_tickets_without_capacity_checks(vv, qty, seats)
       else
         self.errors.add(:base, I18n.translate('store.errors.not_enough_seats', :count => saleable_seats))
diff --git a/app/models/valid_voucher.rb b/app/models/valid_voucher.rb
index 12b654e59..8fbe06f74 100644
--- a/app/models/valid_voucher.rb
+++ b/app/models/valid_voucher.rb
@@ -10,10 +10,13 @@
 
 class ValidVoucher < ActiveRecord::Base
 
+  # Capacity is infinite if it is left blank
+  INFINITE = 100_000
+  
   class InvalidRedemptionError < RuntimeError ;  end
   class InvalidProcessedByError < RuntimeError ; end
 
-  attr_accessible :showdate_id, :showdate, :vouchertype_id, :vouchertype, :promo_code, :start_sales, :end_sales, :max_sales_for_type
+  attr_accessible :showdate_id, :showdate, :vouchertype_id, :vouchertype, :promo_code, :start_sales, :end_sales, :max_sales_for_type, :min_sales_per_txn, :max_sales_per_txn
   # auxiliary attributes that aren't persisted
   attr_accessible :explanation, :visible, :supplied_promo_code, :customer, :max_sales_for_this_patron
   belongs_to :showdate
@@ -22,14 +25,15 @@ class InvalidProcessedByError < RuntimeError ; end
   validates_associated :showdate, :if => lambda { |v| !(v.vouchertype.bundle?) }
   validates_associated :vouchertype
   validates_numericality_of :max_sales_for_type, :allow_nil => true, :greater_than_or_equal_to => 0
+  validates_numericality_of :min_sales_per_txn, :greater_than_or_equal_to => 1, :less_than_or_equal_to => INFINITE, :message => "must be blank, or greater than or equal to 1"
+  validates_numericality_of :max_sales_per_txn, :greater_than_or_equal_to => 1, :less_than_or_equal_to => INFINITE, :message => "must be blank, or greater than or equal to 1"
+  validate :min_max_sales_constraints
   validates_presence_of :start_sales
   validates_presence_of :end_sales
 
   scope :for_ticket_products, -> { joins(:vouchertype).where('vouchertypes.category != ?', 'nonticket') }
   scope :sorted, -> { joins(:vouchertype).order('vouchertypes.display_order,vouchertypes.name') }
 
-  # Capacity is infinite if it is left blank
-  INFINITE = 100_000
   def max_sales_for_type ; self[:max_sales_for_type] || INFINITE ; end
   def sales_unlimited?   ; max_sales_for_type >= INFINITE ; end
 
@@ -71,6 +75,36 @@ def max_sales_for_this_patron
     end
   end
 
+  # min and max dropdown menu options, plus an option to purchase zero tickets,
+  # that respects min and max sales per txn as well as max of remaining seats etc.
+  # Make the menu contain at most max choices.
+  def min_and_max_sales_for_this_txn(max_choices = INFINITE)
+    max_sales = [self.max_sales_for_this_patron,
+                 self.max_sales_per_txn,
+                 self.seats_of_type_remaining].
+                  min
+    min_sales = self.min_sales_per_txn
+    if (max_sales.zero? ||   # maybe no seats of this type remaining
+        max_sales < min_sales) # or just not enough
+      [0]
+    else # at this point, we know max_sales >= min_sales, and neither is zero
+      range = [max_sales - min_sales + 1, max_choices].min
+      [0] + (min_sales .. min_sales+range-1).to_a
+    end
+  end
+
+  def display_min_and_max_sales_per_txn
+    if min_sales_per_txn == 1
+      max_sales_per_txn == INFINITE ? '' : "(max #{max_sales_per_txn} per order)"
+    else                        # minimum order
+      case max_sales_per_txn
+      when min_sales_per_txn then "(#{min_sales_per_txn} per order)"
+      when INFINITE then "(#{min_sales_per_txn}+ per order)"
+      else "(#{min_sales_per_txn}-#{max_sales_per_txn} per order)"
+      end
+    end
+  end
+
   private
 
   # A zero-price vouchertype that is marked as "available to public"
@@ -81,6 +115,16 @@ def self_service_comps_must_have_promo_code
     end
   end
 
+  # Min/max sales per transaction cannot contradict min/max sales for type.
+  # This is checked *after* each attribute is individually range-checked
+  def min_max_sales_constraints
+    errors.add :min_sales_per_txn, "cannot be greater than max allowed sales of this type"  if
+      min_sales_per_txn > max_sales_for_type
+    errors.add :min_sales_per_txn, "cannot be greater than maximum purchase per transaction" if
+      min_sales_per_txn > max_sales_per_txn
+    errors.empty?
+  end
+
   # Vouchertype's valid date must not be later than valid_voucher start date
   # Vouchertype expiration date must not be earlier than valid_voucher end date
   def check_dates
@@ -156,6 +200,7 @@ def adjust_for_capacity
       when INFINITE then "No performance-specific limit applies"
       else "#{max_sales_for_this_patron} remaining"
       end
+    self.explanation << " " << display_min_and_max_sales_per_txn
     self.visible = true
   end
 
@@ -201,10 +246,10 @@ def self.bundles(seasons = [Time.this_season-1, Time.this_season+1])
 
   def self.bundles_available_to(customer = Customer.walkup_customer, promo_code=nil)
     bundles = ValidVoucher.
-      where('? BETWEEN start_sales AND end_sales', Time.current).
-      includes(:vouchertype,:showdate).references(:vouchertypes).
-      where('vouchertypes.category' => 'bundle').
-      order("season DESC,display_order,price DESC")
+                where('? BETWEEN start_sales AND end_sales', Time.current).
+                includes(:vouchertype,:showdate).references(:vouchertypes).
+                where('vouchertypes.category' => 'bundle').
+                order("season DESC,display_order,price DESC")
     bundles = bundles.map do |b|
       b.customer = customer
       b.supplied_promo_code = promo_code
diff --git a/app/views/shows/_showdate.html.haml b/app/views/shows/_showdate.html.haml
index 0ac1252d7..620e59747 100644
--- a/app/views/shows/_showdate.html.haml
+++ b/app/views/shows/_showdate.html.haml
@@ -24,7 +24,8 @@
         - nsales = showdate.sales_by_type(v.vouchertype_id)
         .col-3
           = link_to v.vouchertype.name_with_price, {:controller => 'valid_vouchers', :action => 'edit', :id => v.id}
-          = "(#{h(v.promo_code)})" unless v.promo_code.blank?
+          = v.display_min_and_max_sales_per_txn
+          = "(#{v.promo_code})" unless v.promo_code.blank?
         .col-3= time_in_words_relative_to(v.start_sales,showdate.thedate)
         .col-3= showdate_time_limit_for(v, :end_sales)
         .col-3
diff --git a/app/views/store/_ticket_menus.html.haml b/app/views/store/_ticket_menus.html.haml
index a4f622a01..d9bb031d7 100644
--- a/app/views/store/_ticket_menus.html.haml
+++ b/app/views/store/_ticket_menus.html.haml
@@ -33,7 +33,6 @@
       - @store.valid_vouchers.each do |v|
         %div{:id => "vouchertype_#{v.vouchertype_id}",:class => ['form-group', 'form-row', (v.promo_code.blank? ? 'no-promo' : 'promo')]}
           - fieldname = "valid_voucher[#{v.id}]"
-          - max_sales = [30, v.max_sales_for_this_patron].min
           %label.col-form-label.text-right.col-sm-4{:for => "valid_voucher_#{v.id}"}= v.name_with_price
           - ticket_class = if v.vouchertype.reservable? then 'ticket' else '' end
           - if @gAdminDisplay
@@ -42,9 +41,11 @@
             .col-sm-7
               %label.col-form-label.form-control-sm.alert-warning.s-explain= v.explanation
           - else
-            = select_tag(fieldname, options_for_select(0..max_sales), 'data-price' => v.price, 'data-zone' => v.zone_short_name, :class => "itemQty #{ticket_class} form-control form-control-sm col-sm-1")
-            - if max_sales.zero?
-              %span.text-info.col-sm-7.border.border-danger.s-explain= v.explanation
+            - num_allowed = v.min_and_max_sales_for_this_txn(max_choices = 20)
+            - if num_allowed.last.zero?
+              %span.text-info.col-sm-4.border.border-danger.s-explain No seats remaining for tickets of this type
+            - else
+              = select_tag(fieldname, options_for_select(num_allowed), 'data-price' => v.price, 'data-zone' => v.zone_short_name, :class => "itemQty #{ticket_class} form-control form-control-sm col-sm-1")
           = hidden_field_tag "price[#{v.id}]", v.price, {:id => "valid_voucher_#{v.id}_price"}
 
     - if ! @store.valid_vouchers.empty? && !@store.sd.stream?
diff --git a/app/views/valid_vouchers/edit.html.haml b/app/views/valid_vouchers/edit.html.haml
index 34e6f2a6b..91b222bac 100644
--- a/app/views/valid_vouchers/edit.html.haml
+++ b/app/views/valid_vouchers/edit.html.haml
@@ -22,7 +22,7 @@
     .col-md-5.text-right
       = popup_help_for :valid_voucher_min_sales_per_txn
       %label.col-form-label{:for=>:valid_voucher_min_sales_per_txn} Min purchase per transaction
-    = number_field_tag 'valid_voucher_min_sales_per_txn', @valid_voucher.min_sales_per_txn, :name => 'valid_voucher[min_sales_per_txn]', :class => 'form-control col-md-2'
+    = number_field_tag 'valid_voucher_min_sales_per_txn', (@valid_voucher.min_sales_per_txn unless @valid_voucher.min_sales_per_txn == 1), :name => 'valid_voucher[min_sales_per_txn]', :class => 'form-control col-md-2'
 
   .form-group.form-row
     .col-md-5.text-right
diff --git a/config/locales/en.popup_help.yml b/config/locales/en.popup_help.yml
index 2aa311e62..ab6ab8dc6 100644
--- a/config/locales/en.popup_help.yml
+++ b/config/locales/en.popup_help.yml
@@ -366,6 +366,17 @@ en:
       Maximum number of bundles/subscriptions of this type that may be sold.
       Leave blank for unlimited.                  
 
+    valid_voucher_min_sales_per_txn:
+
+      Minimum number of tickets of this type that can be purchased in one transaction.
+      For example, set it to 2 to offer a 2-ticket pack.  Leave blank for 1.
+
+    valid_voucher_max_sales_per_txn:
+
+      Maximum number of tickets of this type that can be purchased in one transaction.
+      For example, you can limit sales of a promo or discount ticket to a maximum
+      per transaction.  Leave blank for unlimited.
+
     valid_voucher_promo_code: >
 
       If you enter a promo code here, customers (but not box office staff) 
diff --git a/config/locales/en.yml b/config/locales/en.yml
index a2cef03ce..02de4eee2 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1,4 +1,10 @@
 en:
+  activerecord:
+    attributes:
+      valid_voucher:
+        min_sales_per_txn: "Minimum purchase per transaction"
+        max_sales_per_txn: "Maximum purchase per transaction"
+
   reports:
     revenue_details:
       csv_error: >
diff --git a/db/migrate/20230803004141_add_min_max_purchase_to_valid_voucher.rb b/db/migrate/20230803004141_add_min_max_purchase_to_valid_voucher.rb
index 1859ab53c..a5b154b97 100644
--- a/db/migrate/20230803004141_add_min_max_purchase_to_valid_voucher.rb
+++ b/db/migrate/20230803004141_add_min_max_purchase_to_valid_voucher.rb
@@ -1,4 +1,8 @@
 class AddMinMaxPurchaseToValidVoucher < ActiveRecord::Migration
   def change
+    change_table :valid_vouchers do |t|
+      t.integer :min_sales_per_txn, :default => 1, :allow_nil => false
+      t.integer :max_sales_per_txn, :default => ValidVoucher::INFINITE, :allow_nil => false
+    end
   end
 end
diff --git a/db/migrate/20230925030503_adjust_infinity_in_max_sales_for_type.rb b/db/migrate/20230925030503_adjust_infinity_in_max_sales_for_type.rb
new file mode 100644
index 000000000..fd871fddf
--- /dev/null
+++ b/db/migrate/20230925030503_adjust_infinity_in_max_sales_for_type.rb
@@ -0,0 +1,10 @@
+class AdjustInfinityInMaxSalesForType < ActiveRecord::Migration
+  # previous code used '999' as an upper bound on max_sales_for_type that means "infinity".
+  # it should be 10_000 to be consistent with the value of ValidVoucher::INFINITE.
+  def change
+    ValidVoucher.where("max_sales_for_type=999").
+      update_all(:max_sales_for_type => ValidVoucher::INFINITE)
+    ValidVoucher.where("max_sales_per_txn=999").
+      update_all(:max_sales_per_txn => ValidVoucher::INFINITE)
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index fc8212787..dc62535de 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20230803004141) do
+ActiveRecord::Schema.define(version: 20230925030503) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -320,8 +320,10 @@
     t.datetime "start_sales"
     t.datetime "end_sales"
     t.integer  "max_sales_for_type"
-    t.datetime "created_at",                      null: false
-    t.datetime "updated_at",                      null: false
+    t.datetime "created_at",                                    null: false
+    t.datetime "updated_at",                                    null: false
+    t.integer  "min_sales_per_txn",               default: 1
+    t.integer  "max_sales_per_txn",               default: 999
   end
 
   add_index "valid_vouchers", ["showdate_id"], name: "index_valid_vouchers_on_showdate_id", using: :btree
diff --git a/features/step_definitions/showdate_has_vouchers_steps.rb b/features/step_definitions/showdate_has_vouchers_steps.rb
index 4ed10e051..74a572149 100644
--- a/features/step_definitions/showdate_has_vouchers_steps.rb
+++ b/features/step_definitions/showdate_has_vouchers_steps.rb
@@ -14,11 +14,11 @@
 Given /^a show "(.*)" with the following tickets available:$/ do |show_name, tickets|
   tickets.hashes.each do |t|
     steps %Q{Given a show "#{show_name}" with #{t[:qty]} "#{t[:type]}" tickets for #{t[:price]} on "#{t[:showdate]}"}
+    @showdate = Showdate.find_by!(:thedate => Time.parse(t[:showdate]))
     # if sales cutoff time is specified, modify the valid-voucher once created
     if (cutoff = t[:sales_cutoff])
-      sd = Showdate.find_by!(:thedate => Time.parse(t[:showdate]))
-      vv = ValidVoucher.find_by!(:showdate => sd, :vouchertype => Vouchertype.find_by!(:name => t[:type]))
-      vv.update_attributes(:end_sales => sd.thedate - cutoff.to_i.minutes)
+      vv = ValidVoucher.find_by!(:showdate => @showdate, :vouchertype => Vouchertype.find_by!(:name => t[:type]))
+      vv.update_attributes(:end_sales => @showdate.thedate - cutoff.to_i.minutes)
     end
   end
 end
@@ -34,6 +34,12 @@
   make_valid_tickets(@showdate, @vouchertype, n.to_i)
 end
 
+Given /"(.*)" tickets for that performance must be purchased at least (\d+) and at most (\d+) at a time/ do |vtype,min,max|
+  expect(@showdate).to be_a_kind_of Showdate
+  vv = ValidVoucher.find_by!(:showdate => @showdate, :vouchertype => Vouchertype.find_by!(:name => vtype))
+  vv.update_attributes!(:min_sales_per_txn => min.to_i, :max_sales_per_txn => max.to_i)
+end
+
 Given /^the "(.*)" tickets for "(.*)" require promo code "(.*)"$/ do |ticket_type,date,promo|
   vouchertype = Vouchertype.find_by_name! ticket_type
   showdate = Showdate.find_by_thedate! Time.zone.parse date
diff --git a/features/store/min_and_max_sales_per_transaction.feature b/features/store/min_and_max_sales_per_transaction.feature
new file mode 100644
index 000000000..4c92ac8ee
--- /dev/null
+++ b/features/store/min_and_max_sales_per_transaction.feature
@@ -0,0 +1,31 @@
+Feature: enforce minimum and maximum sales per transaction for a particular voucher type
+
+  As a boxoffice manager
+  So that I can offer Buy One Get One and similar promotions
+  I want to enforce both a minimum and maximum number of tickets that can be purchased in one sale
+
+  Background: performance with minimum and maximum purchase limits on a promotional ticket
+
+    Given a show "The Nerd" with 5 "General" tickets for $10.00 on "Oct 1, 2010, 7pm"
+    And "General" tickets for that performance must be purchased at least 3 and at most 4 at a time
+
+  Scenario: cannot add fewer than minimum tickets per transaction to cart
+
+    Given 1 "General" tickets have been sold for "Oct 1, 2010, 7pm"
+    When I go to the store page
+    Then the "General - $10.00" menu should have options: 0;3;4
+
+  Scenario: cannot add fewer than minimum tickets per transaction to cart, nor more than available
+
+    Given 2 "General" tickets have been sold for "Oct 1, 2010, 7pm"
+    When I go to the store page
+    Then the "General - $10.00" menu should have options: 0;3
+
+  Scenario: when minimum purchase per txn exceeds number of tickets of that type remaining, should show as sold out
+
+    Given 3 "General" tickets have been sold for "Oct 1, 2010, 7pm"
+    When I go to the store page
+    Then the "General - $10.00" menu should have options: 0
+
+
+      
diff --git a/features/support/env.rb b/features/support/env.rb
index a1b479c34..ef3683e00 100644
--- a/features/support/env.rb
+++ b/features/support/env.rb
@@ -26,9 +26,10 @@
 Capybara.default_selector = :css
 Capybara.server = :webrick
 Capybara.register_driver :selenium do |app|
-  Webdrivers::Chromedriver.required_version = '114.0.5735.90'
+  Webdrivers::Chromedriver.required_version = '119.0.6045.105'
+  webdriver_args = %w[--headless --no-sandbox --disable-gpu --window-size=1024,1024]
   options = Selenium::WebDriver::Chrome::Options.new(
-    args: %w[--headless --no-sandbox --disable-gpu --window-size=1024,1024]
+    args: webdriver_args
   )
   # When an "unexpected" alert/confirm is displayed, accept it (ie user clicks OK).
   # Expected ones can be handled with accept_alert do...end or accept_confirm do...end
diff --git a/features/support/webmock.rb b/features/support/webmock.rb
index acf743dca..a9709c5e7 100644
--- a/features/support/webmock.rb
+++ b/features/support/webmock.rb
@@ -3,4 +3,8 @@
 WebMock.disable_net_connect!(
   net_http_connect_on_start: true, # @see https://github.com/bblimke/webmock/blob/master/README.md#connecting-on-nethttpstart
   allow_localhost: true,
-  allow: "chromedriver.storage.googleapis.com")
+  #  186585553: When upgrade to Ruby3.0, stop requiring webdrivers gem, upgrade to Selenium 4.11+,
+  #   and hopefully remove the whitelist URIs below
+  allow: ["googlechromelabs.github.io", 'edgedl.me.gvt1.com']
+)
+
diff --git a/spec/models/valid_voucher_spec.rb b/spec/models/valid_voucher_spec.rb
index a055663f9..05d0735e0 100644
--- a/spec/models/valid_voucher_spec.rb
+++ b/spec/models/valid_voucher_spec.rb
@@ -10,6 +10,14 @@
     end
   end
 
+  it "has a friendly error message for min/max_sales_per_txn" do
+    @v = build(:valid_voucher)
+    @v.min_sales_per_txn = @v.max_sales_per_txn = -1
+    expect(@v).not_to be_valid
+    expect(@v.errors.full_messages).to include_match_for /^Minimum purchase per transaction must be blank, or greater than or equal to 1$/
+    expect(@v.errors.full_messages).to include_match_for /^Maximum purchase per transaction must be blank, or greater than or equal to 1$/
+  end
+
   describe "seats remaining" do 
     subject do
       ValidVoucher.new(