diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3d74223
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,27 @@
+name: Run tests
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  run-rspec-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: [2.7, 3.4]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Ruby ${{ matrix.ruby-version }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler-cache: true
+
+      - name: Run tests
+        run: |
+          bundle exec rspec
diff --git a/.gitignore b/.gitignore
index 052ad29..2799a42 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 /Gemfile.lock
 .rvmrc
 .tool-versions
+.byebug_history
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1bebfae..395fd31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,10 +5,16 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 This change log follows the conventions of [keepachangelog.com](http://keepachangelog.com/).
 
+## [2.0.1] - 2025-04-17
+
+- Fix bugs introduced with version 2 where the base URL for v1 was broken.
+- Add GitHub Actions workflow
 ## [2.0.0] - 2025-04-11
+
 - **BREAKING change**: Minimum ruby version updated to 2.7.
 - Added options for using new V2 API endpoints. Resource `Pipedrive::Activity` switched to new V2 endpoint.
 - Documentation updates with information on V1/V2 API endpoint switching.
+
 ## [1.3.1] - 2023-06-01
 
 - **BREAKING change**: Generated `delete_*` method has been refactored to receive the `id` of the record to be dettached or deleted - instead of the resource per se -, for instance: `deal.delete_product(attached_product_id)`. This is because the API behaves different depending on the endpoint, like in case of `#DELETE /deals/{id}/products/{product_attachment_id}` that receives an id corresponding to the attachment id (not a product, but a different record).
diff --git a/README.md b/README.md
index 2565475..504c60c 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![Run tests](https://github.com/getonbrd/pipedrive-connect/actions/workflows/ci.yml/badge.svg)](https://github.com/getonbrd/pipedrive-connect/actions/workflows/ci.yml)
+
 # Pipedrive API Ruby library
 
 Pipedrive::Connect provides a convenient access to the Pipedrive API from applications written in the Ruby language.
@@ -75,7 +77,8 @@ irb(main):009:0> Pipedrive.use_v2_api!
 irb(main):010:0> Pipedrive.api_version
 => :v2
 ```
-*Please note:* not all resources have V2 api endpoint. For these resources the V2 setting will be ignored and the
+
+_Please note:_ not all resources have V2 api endpoint. For these resources the V2 setting will be ignored and the
 V1 endpoints will always be used.
 
 ```ruby
diff --git a/lib/pipedrive.rb b/lib/pipedrive.rb
index 38d1779..15de30d 100644
--- a/lib/pipedrive.rb
+++ b/lib/pipedrive.rb
@@ -24,7 +24,7 @@
 require "pipedrive/resources"
 
 module Pipedrive
-  BASE_URL = "https://api.pipedrive.com/api"
+  BASE_URL = "https://api.pipedrive.com"
 
   class << self
     attr_accessor :api_key,
diff --git a/lib/pipedrive/api_operations/request.rb b/lib/pipedrive/api_operations/request.rb
index fc78b37..24b70ac 100644
--- a/lib/pipedrive/api_operations/request.rb
+++ b/lib/pipedrive/api_operations/request.rb
@@ -17,6 +17,17 @@ def api_version
           supports_v2_api? ? Pipedrive.api_version : :v1
         end
 
+        def api_version_prefix
+          # Version 1 endpoints don't use the '/api/' prefix
+          return api_version if api_version == :v1
+
+          "api/#{api_version}"
+        end
+
+        def api_base_url
+          "#{BASE_URL}/#{api_version_prefix}"
+        end
+
         def request(method, url, params = {})
           check_api_key!
           raise "Not supported method" \
@@ -39,7 +50,7 @@ def request(method, url, params = {})
 
         def api_client
           @api_client = Faraday.new(
-            url: "#{BASE_URL}/#{api_version}",
+            url: api_base_url,
             headers: { "Content-Type": "application/json" }
           ) do |faraday|
             if Pipedrive.debug_http
diff --git a/lib/pipedrive/errors.rb b/lib/pipedrive/errors.rb
index b010cc9..b8e6bd8 100644
--- a/lib/pipedrive/errors.rb
+++ b/lib/pipedrive/errors.rb
@@ -61,9 +61,9 @@ def raise_error(status, response)
 
     error_data =
       response
-      .fetch(:data, {})
-      .inspect
-      .concat(response.fetch(:additional_data, {}).inspect)
+        .fetch(:data, {})
+        .inspect
+        .concat(response.fetch(:additional_data, {}).inspect)
 
     error_class = ERROR_CLASS_MAP[status.to_s]
     raise error_class.new(message, status, error_data) if error_class
diff --git a/lib/pipedrive/version.rb b/lib/pipedrive/version.rb
index 128bcc2..17b678d 100644
--- a/lib/pipedrive/version.rb
+++ b/lib/pipedrive/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Pipedrive
-  VERSION = "2.0.0"
+  VERSION = "2.0.1"
 end
diff --git a/spec/lib/pipedrive/activity_spec.rb b/spec/lib/pipedrive/activity_spec.rb
index 252c2a8..1f9e8d4 100644
--- a/spec/lib/pipedrive/activity_spec.rb
+++ b/spec/lib/pipedrive/activity_spec.rb
@@ -30,8 +30,7 @@
   end
 
   describe "default v2 api version" do
--    it "returns v1 api version" do
-+    it "returns v2 api version" do
+    it "returns v2 api version" do
       expect(described_class.api_version).to eq(:v2)
     end
   end
diff --git a/spec/lib/pipedrive/pipedrive_spec.rb b/spec/lib/pipedrive/pipedrive_spec.rb
index 2828909..946c129 100644
--- a/spec/lib/pipedrive/pipedrive_spec.rb
+++ b/spec/lib/pipedrive/pipedrive_spec.rb
@@ -107,14 +107,17 @@
         {
           error: "Bad request",
           data: "Error data",
-          additional_data: { abc: 123 },
+          additional_data: { "abc" => 123 },
         }
       end
 
       it "includes data and additional data into the error" do
         described_class.raise_error(1000, response)
       rescue StandardError => e
-        expect(e.data).to eq "\"Error data\"{:abc=>123}"
+        data = e.data
+        expect(data).to include("Error data")
+        expect(data).to include("abc")
+        expect(data).to include("123")
       end
     end
   end
diff --git a/spec/lib/pipedrive/resource_spec.rb b/spec/lib/pipedrive/resource_spec.rb
index 9545872..0b00383 100644
--- a/spec/lib/pipedrive/resource_spec.rb
+++ b/spec/lib/pipedrive/resource_spec.rb
@@ -31,6 +31,28 @@ class Resourceable < Resource
     end
   end
 
+  describe "#api_base_url" do
+    context "when it supports v2 api" do
+      before do
+        allow(described_class).to receive(:supports_v2_api?).and_return(true)
+      end
+
+      it "returns v2 expected url" do
+        expect(described_class.api_base_url).to eq("https://api.pipedrive.com/api/v2")
+      end
+    end
+
+    context "when it does not support v2 api" do
+      before do
+        allow(described_class).to receive(:supports_v2_api?).and_return(false)
+      end
+
+      it "returns v1 expected url" do
+        expect(described_class.api_base_url).to eq("https://api.pipedrive.com/v1")
+      end
+    end
+  end
+
   describe "#class_name" do
     it "returns the name of the scoped class" do
       expect(described_class.class_name).to eq("Resourceable")
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 5d4509b..e92c95d 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -6,6 +6,7 @@
 end
 
 require "pipedrive"
+require "byebug"
 
 # This file was generated by the `rspec --init` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.