From 70d1c0d55a6982b059be2809cae088351ba7f112 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Sat, 7 Feb 2026 06:01:55 +0000
Subject: [PATCH 1/2] fix(client): loosen json header parsing

---
 lib/courier/internal/util.rb       | 2 +-
 rbi/courier/internal/util.rbi      | 2 +-
 test/courier/internal/util_test.rb | 2 ++
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/courier/internal/util.rb b/lib/courier/internal/util.rb
index fc0a2c77..e49292ae 100644
--- a/lib/courier/internal/util.rb
+++ b/lib/courier/internal/util.rb
@@ -485,7 +485,7 @@ def writable_enum(&blk)
       end
 
       # @type [Regexp]
-      JSON_CONTENT = %r{^application/(?:vnd(?:\.[^.]+)*\+)?json(?!l)}
+      JSON_CONTENT = %r{^application/(?:[a-zA-Z0-9.-]+\+)?json(?!l)}
       # @type [Regexp]
       JSONL_CONTENT = %r{^application/(:?x-(?:n|l)djson)|(:?(?:x-)?jsonl)}
 
diff --git a/rbi/courier/internal/util.rbi b/rbi/courier/internal/util.rbi
index 97cb71f7..5d0a35f9 100644
--- a/rbi/courier/internal/util.rbi
+++ b/rbi/courier/internal/util.rbi
@@ -296,7 +296,7 @@ module Courier
       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)
 
diff --git a/test/courier/internal/util_test.rb b/test/courier/internal/util_test.rb
index 5584ef84..c4dd2b16 100644
--- a/test/courier/internal/util_test.rb
+++ b/test/courier/internal/util_test.rb
@@ -171,6 +171,8 @@ def test_json_content
     cases = {
       "application/json" => true,
       "application/jsonl" => false,
+      "application/arbitrary+json" => true,
+      "application/ARBITRARY+json" => true,
       "application/vnd.github.v3+json" => true,
       "application/vnd.api+json" => true
     }

From 85d02e673be03f039550d7fe8813dd54437dbf3a Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Sat, 7 Feb 2026 06:02:14 +0000
Subject: [PATCH 2/2] release: 4.7.1

---
 .release-please-manifest.json | 2 +-
 CHANGELOG.md                  | 8 ++++++++
 Gemfile.lock                  | 2 +-
 README.md                     | 2 +-
 lib/courier/version.rb        | 2 +-
 5 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1eec10e9..f1a48d37 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.7.0"
+  ".": "4.7.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 373589be..f93bae61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 4.7.1 (2026-02-07)
+
+Full Changelog: [v4.7.0...v4.7.1](https://github.com/trycourier/courier-ruby/compare/v4.7.0...v4.7.1)
+
+### Bug Fixes
+
+* **client:** loosen json header parsing ([70d1c0d](https://github.com/trycourier/courier-ruby/commit/70d1c0d55a6982b059be2809cae088351ba7f112))
+
 ## 4.7.0 (2026-02-06)
 
 Full Changelog: [v4.6.3...v4.7.0](https://github.com/trycourier/courier-ruby/compare/v4.6.3...v4.7.0)
diff --git a/Gemfile.lock b/Gemfile.lock
index c0b0364f..e0b6500b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    trycourier (4.7.0)
+    trycourier (4.7.1)
       cgi
       connection_pool
 
diff --git a/README.md b/README.md
index 9c8eb441..3e2c2646 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "trycourier", "~> 4.7.0"
+gem "trycourier", "~> 4.7.1"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/courier/version.rb b/lib/courier/version.rb
index 006c4e58..4ef2cb5e 100644
--- a/lib/courier/version.rb
+++ b/lib/courier/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Courier
-  VERSION = "4.7.0"
+  VERSION = "4.7.1"
 end