--- a/calendar/locales/all-locales
+++ b/calendar/locales/all-locales
@@ -50,14 +50,15 @@ rm
 ro
 ru
 si
 sk
 sl
 sq
 sr
 sv-SE
+th
 tr
 uk
 uz
 vi
 zh-CN
 zh-TW

--- a/calendar/locales/l10n.toml
+++ b/calendar/locales/l10n.toml
@@ -57,16 +57,17 @@ locales = [
     "ro",
     "ru",
     "si",
     "sk",
     "sl",
     "sq",
     "sr",
     "sv-SE",
+    "th",
     "tr",
     "uk",
     "uz",
     "vi",
     "zh-CN",
     "zh-TW",
 ]
 

--- a/mail/locales/all-locales
+++ b/mail/locales/all-locales
@@ -51,14 +51,15 @@ rm
 ro
 ru
 si
 sk
 sl
 sq
 sr
 sv-SE
+th
 tr
 uk
 uz
 vi
 zh-CN
 zh-TW

--- a/mail/locales/l10n-changesets.json
+++ b/mail/locales/l10n-changesets.json
@@ -569,16 +569,26 @@
             "linux",
             "linux64",
             "macosx64",
             "win32",
             "win64"
         ],
         "revision": "default"
     },
+    "th": {
+        "platforms": [
+            "linux",
+            "linux64",
+            "macosx64",
+            "win32",
+            "win64"
+        ],
+        "revision": "default"
+    },
     "tr": {
         "platforms": [
             "linux",
             "linux64",
             "macosx64",
             "win32",
             "win64"
         ],

--- a/mail/locales/l10n.toml
+++ b/mail/locales/l10n.toml
@@ -58,16 +58,17 @@ locales = [
     "ro",
     "ru",
     "si",
     "sk",
     "sl",
     "sq",
     "sr",
     "sv-SE",
+    "th",
     "tr",
     "uk",
     "uz",
     "vi",
     "zh-CN",
     "zh-TW",
 ]