diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d04f223..383dd5a 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.5.1"
+  ".": "0.5.2"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c676000..3daea5e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.5.2 (2026-02-07)
+
+Full Changelog: [v0.5.1...v0.5.2](https://github.com/Hexlet/amocrm-ruby/compare/v0.5.1...v0.5.2)
+
+### Bug Fixes
+
+* **client:** loosen json header parsing ([b2969f0](https://github.com/Hexlet/amocrm-ruby/commit/b2969f03cdd70e6690cb1b6767c8a7b453da4d49))
+
 ## 0.5.1 (2026-02-06)
 
 Full Changelog: [v0.5.0...v0.5.1](https://github.com/Hexlet/amocrm-ruby/compare/v0.5.0...v0.5.1)
diff --git a/Gemfile.lock b/Gemfile.lock
index 0d80ad0..ba99692 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    amocrm (0.5.1)
+    amocrm (0.5.2)
       cgi
       connection_pool
 
diff --git a/README.md b/README.md
index 484a206..a212c07 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "amocrm", "~> 0.5.1"
+gem "amocrm", "~> 0.5.2"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/amocrm/version.rb b/lib/amocrm/version.rb
index 470a092..0278c4f 100644
--- a/lib/amocrm/version.rb
+++ b/lib/amocrm/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Amocrm
-  VERSION = "0.5.1"
+  VERSION = "0.5.2"
 end
diff --git a/rbi/amocrm/internal/util.rbi b/rbi/amocrm/internal/util.rbi
index 812cdd9..e637542 100644
--- a/rbi/amocrm/internal/util.rbi
+++ b/rbi/amocrm/internal/util.rbi
@@ -296,7 +296,7 @@ module Amocrm
       end
 
       JSON_CONTENT =
-        T.let(%r{^application/(?:vnd(?:\.[^.]+)*\+)?json(?!l)}, Regexp)
+        T.let(%r{^application/(?:[a-zA-Z0-9.-]+\+)?json(?!l)}, Regexp)
       JSONL_CONTENT =
         T.let(%r{^application/(:?x-(?:n|l)djson)|(:?(?:x-)?jsonl)}, Regexp)