diff --git a/src/pretix/settings.py b/src/pretix/settings.py
index 73e1d28d8..3800460fd 100644
--- a/src/pretix/settings.py
+++ b/src/pretix/settings.py
@@ -357,6 +357,7 @@ ALL_LANGUAGES = [
     ('de-informal', _('German (informal)')),
     ('nl', _('Dutch')),
     ('da', _('Danish')),
+    ('tr', _('Turkish')),
     ('pt-br', _('Portuguese (Brazil)')),
 ]
 LANGUAGES_OFFICIAL = {