diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9fcb41d2..263b5f9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 - **Calendar**: Support HTTP basic auth in iCal subscription URLs (#275)
 - **Admin**: Honor admin-uploaded favicon in root metadata (#274)
 - **Admin**: Honor `NEXT_PUBLIC_BASE_PATH` in admin sidebar nav links (#271)
+- **UI**: Broaden body font stack so Thai (and other non-Latin scripts) render correctly in subjects, sender names, and other chrome (#265)
 
 ## 1.6.4 (2026-05-11)
 
diff --git a/app/globals.css b/app/globals.css
index da7adf0a..515e9a5b 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -171,8 +171,15 @@ body {
   background-color: var(--color-background);
   color: var(--color-foreground);
   font-family:
-    system-ui,
     -apple-system,
+    BlinkMacSystemFont,
+    "Segoe UI",
+    Roboto,
+    "Helvetica Neue",
+    Arial,
+    "Noto Sans Thai",
+    "Leelawadee UI",
+    Tahoma,
     sans-serif;
   font-feature-settings:
     "rlig" 1,