diff --git a/CHANGELOG.md b/CHANGELOG.md
index 336bb0f7..79b779f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [3.8.2](https://github.com/algolia/algoliasearch-client-ruby/compare/3.8.1...3.8.2)
+
+- [f97e44ce0](https://github.com/algolia/api-clients-automation/commit/f97e44ce0) fix(cts): add tests for HTML error ([#4097](https://github.com/algolia/api-clients-automation/pull/4097)) by [@millotp](https://github.com/millotp/)
+
 ## [3.8.1](https://github.com/algolia/algoliasearch-client-ruby/compare/3.8.0...3.8.1)
 
 - [36d583e35](https://github.com/algolia/api-clients-automation/commit/36d583e35) fix(specs): make the searchParams compatible with v4 ([#4108](https://github.com/algolia/api-clients-automation/pull/4108)) by [@millotp](https://github.com/millotp/)
diff --git a/Gemfile.lock b/Gemfile.lock
index 01002f0c..43385c7e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    algolia (3.8.1)
+    algolia (3.8.2)
       base64 (>= 0.2.0, < 1)
       faraday (>= 1.0.1, < 3.0)
       faraday-net_http_persistent (>= 0.15, < 3)
diff --git a/lib/algolia/error.rb b/lib/algolia/error.rb
index 7a744e90..1b03741d 100644
--- a/lib/algolia/error.rb
+++ b/lib/algolia/error.rb
@@ -27,12 +27,12 @@ def initialize(message, errors = [])
   # which is also included in the response attribute.
   #
   class AlgoliaHttpError < AlgoliaError
-    attr_accessor :code, :message
+    attr_accessor :code, :http_message
 
     def initialize(code, message)
       self.code = code
-      self.message = message
-      super("#{self.code()}: #{self.message()}")
+      self.http_message = message
+      super("#{code}: #{message}")
     end
   end
 end
diff --git a/lib/algolia/transport/http/http_requester.rb b/lib/algolia/transport/http/http_requester.rb
index 318b0e69..80d5a565 100644
--- a/lib/algolia/transport/http/http_requester.rb
+++ b/lib/algolia/transport/http/http_requester.rb
@@ -39,14 +39,24 @@ def send_request(host, method, path, body, query_params, headers, timeout, conne
             @logger.info("Request succeeded. Response status: #{response.status}, body: #{response.body}")
           end
 
-          return Http::Response.new(status: response.status, body: response.body, headers: response.headers)
+          return Http::Response.new(
+            status: response.status,
+            reason_phrase: response.reason_phrase,
+            body: response.body,
+            headers: response.headers
+          )
         end
 
         if ENV["ALGOLIA_DEBUG"]
           @logger.info("Request failed. Response status: #{response.status}, error: #{response.body}")
         end
 
-        Http::Response.new(status: response.status, error: response.body, headers: response.headers)
+        Http::Response.new(
+          status: response.status,
+          reason_phrase: response.reason_phrase,
+          error: response.body,
+          headers: response.headers
+        )
       rescue Faraday::TimeoutError => e
         @logger.info("Request timed out. Error: #{e.message}") if ENV["ALGOLIA_DEBUG"]
         Http::Response.new(error: e.message, has_timed_out: true)
diff --git a/lib/algolia/transport/http/response.rb b/lib/algolia/transport/http/response.rb
index fb8c878c..cc6dea15 100644
--- a/lib/algolia/transport/http/response.rb
+++ b/lib/algolia/transport/http/response.rb
@@ -1,13 +1,14 @@
 module Algolia
   module Http
     class Response
-      attr_reader :status, :body, :error, :headers, :has_timed_out, :network_failure
+      attr_reader :status, :reason_phrase, :body, :error, :headers, :has_timed_out, :network_failure
 
       # used for the echo requester
       attr_reader :method, :path, :query_params, :host, :timeout, :connect_timeout
 
       #
       # @option status    [String]  Response status
+      # @option reason_phrase    [String]  Response reason phrase
       # @option body    [String]  Response body
       # @option error    [String]  Response error or caught error
       # @option headers    [String]  Response headers
@@ -15,6 +16,7 @@ class Response
       #
       def initialize(opts = {})
         @status = opts[:status]
+        @reason_phrase = opts[:reason_phrase]
         @body = opts[:body]
         @error = opts[:error] || ""
         @headers = opts[:headers] || ""
diff --git a/lib/algolia/transport/transport.rb b/lib/algolia/transport/transport.rb
index 14c7e416..8c190b88 100644
--- a/lib/algolia/transport/transport.rb
+++ b/lib/algolia/transport/transport.rb
@@ -69,6 +69,11 @@ def request(call_type, method, path, body, opts = {})
             network_failure: response.network_failure
           )
           if outcome == FAILURE
+            # handle HTML error
+            if response.headers["content-type"]&.include?("text/html")
+              raise Algolia::AlgoliaHttpError.new(response.status, response.reason_phrase)
+            end
+
             decoded_error = JSON.parse(response.error, :symbolize_names => true)
             raise Algolia::AlgoliaHttpError.new(response.status, decoded_error[:message])
           end
diff --git a/lib/algolia/version.rb b/lib/algolia/version.rb
index 680549fc..ea0acba0 100644
--- a/lib/algolia/version.rb
+++ b/lib/algolia/version.rb
@@ -1,5 +1,5 @@
 # Code generated by OpenAPI Generator (https://openapi-generator.tech), manual changes will be lost - read more on https://github.com/algolia/api-clients-automation. DO NOT EDIT.
 
 module Algolia
-  VERSION = "3.8.1".freeze
+  VERSION = "3.8.2".freeze
 end