diff --git a/Thunderbird/Changelog b/Thunderbird/Changelog
index c849cce..1b2d640 100644
--- a/Thunderbird/Changelog
+++ b/Thunderbird/Changelog
@@ -1,3 +1,6 @@
+2021-01-11 V1.2.1
+Added French locale. (Thanks to DenBar [DenB10])
+
 2020-12-27 V1.2.0
 Added keyboard shortcut. Ctrl+T now opens DeepL.
 Added options to specify the language of the source and target texts.
diff --git a/Thunderbird/manifest.json b/Thunderbird/manifest.json
index a764e78..7b68f67 100644
--- a/Thunderbird/manifest.json
+++ b/Thunderbird/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 2,
   "name": "__MSG_app_name__",
   "description": "__MSG_app_desc__",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "author": "__MSG_app_author__",
   "applications": {
     "gecko": {