diff --git a/lib/solidus_paypal_braintree/factories.rb b/lib/solidus_paypal_braintree/factories.rb
index cbf25c15..3b742690 100644
--- a/lib/solidus_paypal_braintree/factories.rb
+++ b/lib/solidus_paypal_braintree/factories.rb
@@ -1,11 +1,11 @@
-FactoryGirl.define do
+FactoryBot.define do
   # Define your Spree extensions Factories within this file to enable applications, and other extensions to use and override them.
   #
   # Example adding this to your spec_helper will load these Factories for use:
   # require 'solidus_paypal_braintree/factories'
 end
 
-FactoryGirl.modify do
+FactoryBot.modify do
   # The Solidus address factory randomizes the zipcode.
   # The OrderWalkThrough we use in the credit card checkout spec uses this factory for the user addresses.
   # For credit card payments we transmit the billing address to braintree, for paypal payments the shipping address.
diff --git a/solidus_paypal_braintree.gemspec b/solidus_paypal_braintree.gemspec
index 46dde2df..3ca9bfc1 100644
--- a/solidus_paypal_braintree.gemspec
+++ b/solidus_paypal_braintree.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'coffee-rails'
   s.add_development_dependency 'sass-rails'
   s.add_development_dependency 'database_cleaner'
-  s.add_development_dependency 'factory_girl'
+  s.add_development_dependency 'factory_bot'
   s.add_development_dependency 'rspec-rails'
   s.add_development_dependency 'rubocop', '>= 0.47'
   s.add_development_dependency 'rubocop-rspec'
diff --git a/spec/models/solidus_paypal_braintree/gateway_spec.rb b/spec/models/solidus_paypal_braintree/gateway_spec.rb
index 77125858..40137d65 100644
--- a/spec/models/solidus_paypal_braintree/gateway_spec.rb
+++ b/spec/models/solidus_paypal_braintree/gateway_spec.rb
@@ -405,10 +405,10 @@
     end
 
     shared_examples "sources_by_order" do
-      let(:order) { FactoryGirl.create :order, user: user, state: "complete", completed_at: Time.current }
+      let(:order) { FactoryBot.create :order, user: user, state: "complete", completed_at: Time.current }
       let(:gateway) { new_gateway.tap(&:save!) }
 
-      let(:other_payment_method) { FactoryGirl.create(:payment_method) }
+      let(:other_payment_method) { FactoryBot.create(:payment_method) }
 
       let(:source_without_profile) do
         SolidusPaypalBraintree::Source.create!(
@@ -429,7 +429,7 @@
         end
       end
 
-      let!(:source_payment) { FactoryGirl.create(:payment, order: order, payment_method_id: payment_method_id, source: source) }
+      let!(:source_payment) { FactoryBot.create(:payment, order: order, payment_method_id: payment_method_id, source: source) }
 
       context "when the order has payments with the braintree payment method" do
         let(:payment_method_id) { gateway.id }
@@ -453,7 +453,7 @@
 
       context "when the order has no payments with the braintree payment method" do
         let(:payment_method_id) { other_payment_method.id }
-        let(:source) { FactoryGirl.create :credit_card }
+        let(:source) { FactoryBot.create :credit_card }
 
         it "returns no results" do
           expect(subject.to_a).to eql([])
@@ -463,7 +463,7 @@
 
     describe "#sources_by_order" do
       let(:gateway) { new_gateway.tap(&:save!) }
-      let(:order) { FactoryGirl.create :order, user: user, state: "complete", completed_at: Time.current }
+      let(:order) { FactoryBot.create :order, user: user, state: "complete", completed_at: Time.current }
 
       subject { gateway.sources_by_order(order) }
 
@@ -471,7 +471,7 @@
     end
 
     describe "#reusable_sources" do
-      let(:order) { FactoryGirl.build :order, user: user }
+      let(:order) { FactoryBot.build :order, user: user }
       let(:gateway) { new_gateway.tap(&:save!) }
 
       subject { gateway.reusable_sources(order) }
@@ -482,7 +482,7 @@
 
       context "when an order is not completed" do
         context "when the order has a user id" do
-          let(:user) { FactoryGirl.create(:user) }
+          let(:user) { FactoryBot.create(:user) }
 
           let!(:source_without_profile) do
             SolidusPaypalBraintree::Source.create!(