diff --git a/lib/openid_connect_authenticator.rb b/lib/openid_connect_authenticator.rb
index 185c630..f86c35e 100644
--- a/lib/openid_connect_authenticator.rb
+++ b/lib/openid_connect_authenticator.rb
@@ -64,6 +64,17 @@ class OpenIDConnectAuthenticator < Auth::ManagedAuthenticator
           token_params: token_params,
           passthrough_authorize_options: SiteSetting.openid_connect_authorize_parameters.split("|")
         )
+
+        if SiteSetting.openid_connect_verbose_logging
+          opts[:client_options][:connection_build] = lambda { |builder|
+            builder.response :logger, Rails.logger, { bodies: true, formatter: OIDCFaradayFormatter }
+
+            # Default stack:
+            builder.request :url_encoded             # form-encode POST params
+            builder.adapter Faraday.default_adapter  # make requests with Net::HTTP
+          }
+        end
+
       }
   end
 end
diff --git a/lib/openid_connect_faraday_formatter.rb b/lib/openid_connect_faraday_formatter.rb
new file mode 100644
index 0000000..343a21b
--- /dev/null
+++ b/lib/openid_connect_faraday_formatter.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'faraday/logging/formatter'
+class OIDCFaradayFormatter < Faraday::Logging::Formatter
+  def request(env)
+    warn <<~LOG
+      OIDC Debugging: request #{env.method.upcase} #{env.url.to_s}
+
+      Headers: #{env.request_headers}
+
+      Body: #{env[:body]}
+    LOG
+  end
+
+  def response(env)
+    warn <<~LOG
+      OIDC Debugging: response status #{env.status}
+
+      From #{env.method.upcase} #{env.url.to_s}
+
+      Headers: #{env.response_headers}
+
+      Body: #{env[:body]}
+    LOG
+  end
+end
diff --git a/plugin.rb b/plugin.rb
index 07719f4..cd95021 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -6,6 +6,7 @@
 # authors: David Taylor
 # url: https://github.com/discourse/discourse-openid-connect
 
+require_relative "lib/openid_connect_faraday_formatter"
 require_relative "lib/omniauth_open_id_connect"
 require_relative "lib/openid_connect_authenticator"