Fixes #2941 adds header

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ### Fixed
 
+- Fixes [#2941](https://github.com/gitkraken/vscode-gitlens/issues/2941) - Invalid Request when trying to generate a commit message using Anthropic API
 - Fixes [#2940](https://github.com/gitkraken/vscode-gitlens/issues/2940) - Can't use Azure OpenAI model because i can't save the openai key because of the verification
 - Fixes [#2928](https://github.com/gitkraken/vscode-gitlens/issues/2928) - Apply Changes should create new files when needed
 - Fixes [#2896](https://github.com/gitkraken/vscode-gitlens/issues/2896) - Repositories view stuck in loading state

src/ai/anthropicProvider.ts

@@ -129,6 +129,7 @@ export class AnthropicProvider implements AIProvider {
 				Authorization: `Bearer ${apiKey}`,
 				'Content-Type': 'application/json',
 				'X-API-Key': apiKey,
+				'anthropic-version': '2023-06-01',
 			},
 			method: 'POST',
 			body: JSON.stringify(request),