diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.1.123
+
+- Fixed OAuth authentication failing with a 401 retry loop when `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1` is set
+
 ## 2.1.122
 
 - Added `ANTHROPIC_BEDROCK_SERVICE_TIER` environment variable to select a Bedrock service tier (`default`, `flex`, or `priority`), sent as the `X-Amzn-Bedrock-Service-Tier` header