diff --git a/Gemfile b/Gemfile
index eb613e7..289743a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -64,7 +64,6 @@ group :test do
   gem "selenium-webdriver"
 end
 gem "blacklight", ">= 7.0"
-gem "blacklight_advanced_search"
 
 group :development, :test do
   gem "dotenv"
diff --git a/Gemfile.lock b/Gemfile.lock
index 5a34cfb..a6ed071 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,9 +100,6 @@ GEM
       marc-fastxmlwriter
       rails
       traject (~> 3.0)
-    blacklight_advanced_search (8.0.0.alpha2)
-      blacklight (>= 7.15, < 9)
-      parslet
     bootsnap (1.18.4)
       msgpack (~> 1.2)
     bootstrap (5.3.3)
@@ -286,7 +283,6 @@ GEM
     parser (3.3.7.1)
       ast (~> 2.4.1)
       racc
-    parslet (2.0.0)
     popper_js (2.11.8)
     pp (0.6.2)
       prettyprint
@@ -521,7 +517,6 @@ PLATFORMS
 DEPENDENCIES
   blacklight (>= 7.0)
   blacklight-marc (~> 8.0)
-  blacklight_advanced_search
   bootsnap
   bootstrap (~> 5.3)
   brakeman
diff --git a/app/controllers/catalog_controller.rb b/app/controllers/catalog_controller.rb
index df2dbde..6aa0ef6 100644
--- a/app/controllers/catalog_controller.rb
+++ b/app/controllers/catalog_controller.rb
@@ -3,7 +3,6 @@
 # Blacklight controller that handles searches and document requests
 class CatalogController < ApplicationController
   include Blacklight::Catalog
-  include BlacklightAdvancedSearch::Controller
   include Findingaids::Solr::CatalogHelpers
   delegate :is_collection?, to: :view_context
 
@@ -31,18 +30,6 @@ class CatalogController < ApplicationController
       :timeAllowed => -1
     }
 
-    # default advanced config values
-    config.advanced_search ||= Blacklight::OpenStructWithHashAccess.new
-    config.advanced_search[:enabled] = true
-    config.advanced_search[:qt] ||= "advanced"
-    config.advanced_search[:form_solr_parameters] = {
-      "facet" => true,
-      "facet.field" => advanced_facet_fields.map { |facet| solr_name(facet[:field], :facetable) },
-      "facet.limit" => -1, # return all facet values
-      "facet.sort" => "count" # sort by byte order of values
-    }
-    config.advanced_search[:query_parser] ||= "dismax"
-
     # solr path which will be added to solr base url before the other solr params.
     # config.solr_path = 'select'
 
diff --git a/app/models/search_builder.rb b/app/models/search_builder.rb
index 4052bcc..455d3cc 100644
--- a/app/models/search_builder.rb
+++ b/app/models/search_builder.rb
@@ -2,8 +2,6 @@
 
 class SearchBuilder < Blacklight::SearchBuilder
   include Blacklight::Solr::SearchBuilderBehavior
-  include BlacklightAdvancedSearch::AdvancedSearchBuilder
-  self.default_processor_chain += [ :add_advanced_parse_q_to_solr, :add_advanced_search_to_solr ]
 
   ##
   # @example Adding a new step to the processor chain
diff --git a/config/routes.rb b/config/routes.rb
index ff7f033..d40db46 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,5 @@
 Rails.application.routes.draw do
   mount Blacklight::Engine => "/"
-  mount BlacklightAdvancedSearch::Engine => "/"
 
   root to: "catalog#index"
   concern :searchable, Blacklight::Routes::Searchable.new