diff --git a/lib/wasabi/resolver.rb b/lib/wasabi/resolver.rb
index bf15c62..91ab543 100644
--- a/lib/wasabi/resolver.rb
+++ b/lib/wasabi/resolver.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require "httpi"
+require "faraday"
 
 module Wasabi
 
@@ -22,7 +22,7 @@ def initialize(message, response=nil)
 
     def initialize(document, request = nil, adapter = nil)
       @document = document
-      @request  = request || HTTPI::Request.new
+      @request  = request || Faraday.new
       @adapter  = adapter
     end
 
@@ -41,10 +41,10 @@ def resolve
     private
 
     def load_from_remote
-      request.url = document
-      response = HTTPI.get(request, adapter)
+      request.adapter *adapter if adapter
+      response = request.get(document)
 
-      raise HTTPError.new("Error: #{response.code} for url #{request.url}", response) if response.error?
+      raise HTTPError.new("Error: #{response.status} for url #{document}", response) unless response.success?
 
       response.body
     end
diff --git a/lib/wasabi/version.rb b/lib/wasabi/version.rb
index 6aa4177..748ca90 100644
--- a/lib/wasabi/version.rb
+++ b/lib/wasabi/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Wasabi
-  VERSION = '4.0.0'
+  VERSION = '5.0.0'
 end
diff --git a/spec/support/adapter.rb b/spec/support/adapter.rb
deleted file mode 100644
index 5794715..0000000
--- a/spec/support/adapter.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-# frozen_string_literal: true
-
-class FakeAdapterForTest < HTTPI::Adapter::Base
-
-  register :fake_adapter_for_test
-
-  def initialize(request)
-    @@requests ||= []
-    @@requests.push request
-    @request = request
-  end
-
-  attr_reader :client
-
-  def request(method)
-    @@methods ||= []
-    @@methods.push method
-    HTTPI::Response.new(200, {}, 'wsdl_by_adapter')
-  end
-end
diff --git a/spec/support/responses.rb b/spec/support/responses.rb
new file mode 100644
index 0000000..1d4b005
--- /dev/null
+++ b/spec/support/responses.rb
@@ -0,0 +1,8 @@
+class Responses
+  class << self
+    def mock_faraday(code, headers, body)
+      env = Faraday::Env.from(status: code, response_headers: headers, response_body: body)
+      Faraday::Response.new(env)
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/wasabi/document_spec.rb b/spec/wasabi/document_spec.rb
index f1bb1ec..69aaac5 100644
--- a/spec/wasabi/document_spec.rb
+++ b/spec/wasabi/document_spec.rb
@@ -7,9 +7,13 @@
   subject { Wasabi::Document.new fixture(:authentication).read }
 
   it "accepts a URL" do
-    expect(HTTPI).to receive(:get) { HTTPI::Response.new(200, {}, "wsdl") }
+    path = 'http://example.com?wsdl'
+    stubs = Faraday::Adapter::Test::Stubs.new
+    stubs.get(path) do
+      [200, {'Content-Type': 'application/xml'}, 'wsdl']
+    end
 
-    document = Wasabi::Document.new("http://example.com?wsdl")
+    document = Wasabi::Document.new(path, [:test, stubs])
     expect(document.xml).to eq("wsdl")
   end
 
diff --git a/spec/wasabi/resolver_spec.rb b/spec/wasabi/resolver_spec.rb
index 019df43..81cc646 100644
--- a/spec/wasabi/resolver_spec.rb
+++ b/spec/wasabi/resolver_spec.rb
@@ -6,20 +6,21 @@
 
   describe "#resolve" do
     it "resolves remote documents" do
-      expect(HTTPI).to receive(:get) { HTTPI::Response.new(200, {}, "wsdl") }
+      expect(Faraday::Connection).to receive(:new).and_return(
+        connection = instance_double(Faraday::Connection, get: Responses.mock_faraday(200, {}, "wsdl"))
+      )
       xml = Wasabi::Resolver.new("http://example.com?wsdl").resolve
       expect(xml).to eq("wsdl")
     end
 
     it "resolves remote documents with custom adapter" do
-      prev_logging = HTTPI.instance_variable_get(:@log)
-      HTTPI.log = false # Don't pollute rspec output by request logging
-      xml = Wasabi::Resolver.new("http://example.com?wsdl", nil, :fake_adapter_for_test).resolve
-      expect(xml).to eq("wsdl_by_adapter")
-      expect(FakeAdapterForTest.class_variable_get(:@@requests).size).to eq(1)
-      expect(FakeAdapterForTest.class_variable_get(:@@requests).first.url).to eq(URI.parse("http://example.com?wsdl"))
-      expect(FakeAdapterForTest.class_variable_get(:@@methods)).to eq([:get])
-      HTTPI.log = prev_logging
+      path = 'http://example.com?wsdl'
+      stubs = Faraday::Adapter::Test::Stubs.new
+      stubs.get(path) do
+        [200, {'Content-Type': 'application/xml'}, 'wsdl']
+      end
+      xml = Wasabi::Resolver.new("http://example.com?wsdl", nil, [:test, stubs]).resolve
+      expect(xml).to eq("wsdl")
     end
 
     it "resolves local documents" do
@@ -38,19 +39,19 @@
         "content-type" => "text/html"
       }
       body = "<html><head><title>404 Not Found</title></head><body>Oops!</body></html>"
-      failed_response = HTTPI::Response.new(code, headers, body)
-
-      expect(HTTPI).to receive(:get) { failed_response }
-
+      failed_response = Responses.mock_faraday(code, headers, body)
+      expect(Faraday::Connection).to receive(:new).and_return(
+        connection = instance_double(Faraday::Connection, get: failed_response)
+      )
       url = "http://example.com?wsdl"
 
       expect do
         Wasabi::Resolver.new(url).resolve
-      end.to raise_error { |ex|
+      end.to(raise_error{ |ex|
         expect(ex).to be_a(Wasabi::Resolver::HTTPError)
         expect(ex.message).to eq("Error: #{code} for url #{url}")
         expect(ex.response).to eq(failed_response)
-      }
+      })
     end
   end
 
diff --git a/wasabi.gemspec b/wasabi.gemspec
index 26a07fd..fa0a15f 100644
--- a/wasabi.gemspec
+++ b/wasabi.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
 
   s.license = 'MIT'
 
-  s.add_dependency "httpi",    "~> 3.0"
+  s.add_dependency "faraday",    "~> 2.8"
   s.add_dependency "nokogiri", ">= 1.13.9"
   s.add_dependency "addressable"