diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a9d2e98..cab236e 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,7 @@
 require "bundler/setup"
 require "xpm_ruby"
 require "vcr"
+require "dotenv/load"
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure
@@ -12,6 +13,23 @@
   config.expect_with(:rspec) do |c|
     c.syntax = :expect
   end
+
+  # Shared example group for Xero credentials
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+
+  RSpec.shared_context "xero credentials" do
+    let(:xero_tenant_id) do
+      ENV.fetch("XERO_TENANT_ID") do
+        raise "XERO_TENANT_ID environment variable is required. Please add it to your .env file"
+      end
+    end
+
+    let(:access_token) do
+      ENV.fetch("XERO_ACCESS_TOKEN") do
+        raise "XERO_ACCESS_TOKEN environment variable is required. Please add it to your .env file"
+      end
+    end
+  end
 end
 
 VCR.configure do |config|
diff --git a/spec/xpm_ruby/category_spec.rb b/spec/xpm_ruby/category_spec.rb
index 9ae4410..cc31ebc 100644
--- a/spec/xpm_ruby/category_spec.rb
+++ b/spec/xpm_ruby/category_spec.rb
@@ -5,6 +5,8 @@ module XpmRuby
     subject(:service) { described_class }
 
     describe ".list" do
+      include_context "xero credentials"
+
       let(:xero_tenant_id) { "XERO_TENANT_ID" }
       let(:access_token) { "access_token" }
 
diff --git a/spec/xpm_ruby/client_spec.rb b/spec/xpm_ruby/client_spec.rb
index 8ad6995..5bc6316 100644
--- a/spec/xpm_ruby/client_spec.rb
+++ b/spec/xpm_ruby/client_spec.rb
@@ -3,8 +3,7 @@
 module XpmRuby
   RSpec.describe(Client) do
     describe ".add" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       let(:client) { { "Name" => "Acmer Pty Ltd" } }
 
@@ -22,8 +21,7 @@ module XpmRuby
     end
 
     describe ".update" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "access_token" }
+      include_context "xero credentials"
 
       let(:client) { { "ID" => 25655881, "Name" => "Acmer Pty Ltd" } }
 
@@ -41,8 +39,8 @@ module XpmRuby
     end
 
     describe ".get" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "access_token" }
+      include_context "xero credentials"
+
       let(:client_id) { "32014284" }
 
       it "gets client information" do
@@ -60,7 +58,8 @@ module XpmRuby
     end
 
     describe ".list" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
+      include_context "xero credentials"
+
       let(:access_token) { "token" }
 
       context "when not modified since" do
@@ -132,8 +131,8 @@ module XpmRuby
         Client.search(access_token: access_token, xero_tenant_id: xero_tenant_id, query: query, detailed: detailed)
       end
 
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
+
       let(:query) { "acme" }
 
       context "when detailed false" do
diff --git a/spec/xpm_ruby/connection_spec.rb b/spec/xpm_ruby/connection_spec.rb
index 1f34dfc..91b5af4 100644
--- a/spec/xpm_ruby/connection_spec.rb
+++ b/spec/xpm_ruby/connection_spec.rb
@@ -2,8 +2,7 @@
 
 module XpmRuby
   RSpec.describe(Connection) do
-    let(:xero_tenant_id) { "XERO_TENANT_ID" }
-    let(:access_token) { "access_token" }
+    include_context "xero credentials"
 
     describe "#get" do
       context "with a valid tenant id and access token" do
diff --git a/spec/xpm_ruby/contact_spec.rb b/spec/xpm_ruby/contact_spec.rb
index c8ee3ad..737e827 100644
--- a/spec/xpm_ruby/contact_spec.rb
+++ b/spec/xpm_ruby/contact_spec.rb
@@ -3,8 +3,7 @@
 module XpmRuby
   RSpec.describe(Contact) do
     describe ".add" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       let(:contact) do
         {
@@ -27,8 +26,7 @@ module XpmRuby
     end
 
     describe ".update" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       context "without Client ID" do
         let(:contact) do
@@ -75,8 +73,7 @@ module XpmRuby
     end
 
     describe ".delete" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
       let(:contact_id) { "14574323" }
 
       context "without Client ID" do
diff --git a/spec/xpm_ruby/job_spec.rb b/spec/xpm_ruby/job_spec.rb
index 4e19ea8..2ddf04b 100644
--- a/spec/xpm_ruby/job_spec.rb
+++ b/spec/xpm_ruby/job_spec.rb
@@ -3,8 +3,7 @@
 module XpmRuby
   RSpec.describe(Job) do
     describe ".current" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       around(:each) do |example|
         VCR.use_cassette("xpm_ruby/job/current") do
@@ -29,8 +28,7 @@ module XpmRuby
     end
 
     describe ".add" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
       let(:job) { { "Name" => "Joe Bloggs", "Description" => "New Job", "ClientID" => "24097642", "StartDate" => "20091023", "DueDate" => "20091023" } }
 
       around(:each) do |example|
@@ -51,8 +49,7 @@ module XpmRuby
     end
 
     describe ".update" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
       let(:job) { { "ID" => "J000031", "Name" => "Joe Bloggs", "Description" => "Update Job", "ClientID" => "24097642", "StartDate" => "20091023", "DueDate" => "20091023" } }
 
       around(:each) do |example|
@@ -74,8 +71,7 @@ module XpmRuby
     end
 
     describe ".get" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
       let(:job_id) { "J000014" }
 
       around(:each) do |example|
@@ -97,8 +93,7 @@ module XpmRuby
     end
 
     describe ".state" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       context "when the job state is successful" do
         let(:job) { { "ID" => "J000031", "State" => "COMPLETED" } }
@@ -123,8 +118,7 @@ module XpmRuby
     end
 
     describe ".delete" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       context "with a valid job id" do
         let(:job) { { "ID" => "J000031" } }
@@ -150,8 +144,7 @@ module XpmRuby
     end
 
     describe ".assign" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       context "add and remove staff" do
         context "with a valid job id and staff id" do
@@ -253,8 +246,7 @@ module XpmRuby
     end
 
     describe ".applytemplate" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "token" }
+      include_context "xero credentials"
 
       context "with valid job and template" do
         let(:job) { { "ID" => "J000032", "TemplateID" => 1254078, "TaskMode" => "AddNew" } }
diff --git a/spec/xpm_ruby/staff_spec.rb b/spec/xpm_ruby/staff_spec.rb
index 7d803dd..f13ad08 100644
--- a/spec/xpm_ruby/staff_spec.rb
+++ b/spec/xpm_ruby/staff_spec.rb
@@ -3,7 +3,7 @@
 module XpmRuby
   RSpec.describe(Staff) do
     describe ".list" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
+      include_context "xero credentials"
 
       context "when access token expired" do
         let(:access_token) { "expired" }
@@ -62,8 +62,7 @@ module XpmRuby
     end
 
     describe ".add" do
-      let(:xero_tenant_id) { "xero_tenant_id" }
-      let(:access_token) { "access_token" }
+      include_context "xero credentials"
       let(:staff) { { "Name" => "Joe Bloggs", "Address" => "In your head", "Phone" => "123456789", "Email" => "joebloggs@foo.com", "PayrollCode" => "PC123" } }
 
       around(:each) do |example|
@@ -84,8 +83,7 @@ module XpmRuby
     end
 
     describe ".update" do
-      let(:xero_tenant_id) { "xero_tenant_id" }
-      let(:access_token) { "access_token" }
+      include_context "xero credentials"
       let(:staff) { { "ID" => "1044994", "Name" => "Joe Bloggs", "Address" => "Updated Address", "Phone" => "87654321", "Email" => "bloggsjoe@foo.com", "PayrollCode" => "PC456" } }
 
       around(:each) do |example|
@@ -107,8 +105,7 @@ module XpmRuby
     end
 
     describe ".delete" do
-      let(:xero_tenant_id) { "xero_tenant_id" }
-      let(:access_token) { "access_token" }
+      include_context "xero credentials"
 
       around(:each) do |example|
         VCR.use_cassette("xpm_ruby/staff/delete") do
diff --git a/spec/xpm_ruby/template_spec.rb b/spec/xpm_ruby/template_spec.rb
index d7b2220..0896b32 100644
--- a/spec/xpm_ruby/template_spec.rb
+++ b/spec/xpm_ruby/template_spec.rb
@@ -5,8 +5,7 @@ module XpmRuby
     subject(:service) { described_class }
 
     describe ".list" do
-      let(:xero_tenant_id) { "XERO_TENANT_ID" }
-      let(:access_token) { "XERO_ACCESS_TOKEN" }
+      include_context "xero credentials"
 
       around(:each) do |example|
         VCR.use_cassette("xpm_ruby/template/list") do
diff --git a/xpm_ruby.gemspec b/xpm_ruby.gemspec
index 891803f..287d8d5 100644
--- a/xpm_ruby.gemspec
+++ b/xpm_ruby.gemspec
@@ -35,6 +35,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency("byebug", "~> 11")
   spec.add_development_dependency("pry-byebug", "~> 3")
   spec.add_development_dependency("vcr")
+  spec.add_development_dependency("dotenv")
 
   spec.add_runtime_dependency("faraday")
   spec.add_runtime_dependency("faraday-encoding")