diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a11403..d84a6d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 - Added `chinese2` and `korean2` languages
 - Improved performance of async full reindex
+- Fixed `searchkick:reindex:all` rake task for Rails 6
 
 ## 4.1.0 (2019-08-01)
 
diff --git a/lib/tasks/searchkick.rake b/lib/tasks/searchkick.rake
index b925c61..2f9e80f 100644
--- a/lib/tasks/searchkick.rake
+++ b/lib/tasks/searchkick.rake
@@ -16,7 +16,13 @@ namespace :searchkick do
   namespace :reindex do
     desc "reindex all models"
     task all: :environment do
-      Rails.application.eager_load!
+      if Rails.respond_to?(:autoloaders) && Rails.autoloaders.zeitwerk_enabled?
+        # fix for https://github.com/rails/rails/issues/37006
+        Zeitwerk::Loader.eager_load_all
+      else
+        Rails.application.eager_load!
+      end
+
       Searchkick.models.each do |model|
         puts "Reindexing #{model.name}..."
         model.reindex
--
libgit2 0.21.0