diff --git a/CLAUDE.md b/CLAUDE.md
index 654392c..b26c3a9 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -34,9 +34,9 @@ This project is proudly **"vibe-coded"** using Claude.AI - the entire codebase w
 
 ### Known Bugs
 
-No known bugs at the moment.
+- Take a look at the logfile in `tmp/`
 
-### Version 0.3.8
+### Version 0.3.9
 
 No changes at the moment.
 
@@ -1091,3 +1091,37 @@ Fixed dashboard widget bugs, improved UI consistency, and added download trackin
 - Created release package: `releases/wc-licensed-product-0.3.7.zip` (827 KB)
 - SHA256: `e93b2ab06f6d43c2179167090e07eda5db6809df6e391baece4ceba321cf33f6`
 - Tagged as `v0.3.7` and pushed to `main` branch
+
+### 2026-01-24 - Version 0.3.8 - Translation Bug Fix
+
+**Overview:**
+
+Fixed a critical translation bug that caused the settings page to crash with an `ArgumentCountError`.
+
+**Bug Fix:**
+
+- Fixed: Duplicate German translation string in `wc-licensed-product-de_CH.po` causing `ArgumentCountError` in settings page
+- Root cause: The notification settings description was duplicated in the translation, resulting in two `%s` placeholders when only one argument was passed to `sprintf()`
+- Location: [wc-licensed-product-de_CH.po:322-328](languages/wc-licensed-product-de_CH.po#L322-L328)
+
+**Modified files:**
+
+- `languages/wc-licensed-product-de_CH.po` - Removed duplicated translation string
+- `languages/wc-licensed-product-de_CH.mo` - Recompiled binary translation
+
+**Technical notes:**
+
+- Error was logged to `tmp/fatal-errors-2026-01-24.log`
+- The German `msgstr` contained the same text twice, each with a `%s` placeholder
+- `sprintf()` at `SettingsController.php:221` only provided one argument for the single `%s` in the English source
+- Translation strings with `%s` placeholders must have exactly matching placeholder counts between source and translation
+
+**Dependency Updates:**
+
+- Updated `magdev/wc-licensed-product-client` from `9f513a8` to `64d215c`
+
+**Release v0.3.8:**
+
+- Created release package: `releases/wc-licensed-product-0.3.8.zip` (829 KB)
+- SHA256: `50ad6966c5ab8db2257572084d2d8a820448df62615678e1576696f2c0cb383d`
+- Tagged as `v0.3.8` and pushed to `main` branch