diff --git a/src/pretix/_base_settings.py b/src/pretix/_base_settings.py
index c77e2060f2..9af37c9b24 100644
--- a/src/pretix/_base_settings.py
+++ b/src/pretix/_base_settings.py
@@ -79,6 +79,7 @@ ALL_LANGUAGES = [
     ('de', _('German')),
     ('de-informal', _('German (informal)')),
     ('ar', _('Arabic')),
+    ('ca', _('Catalan')),
     ('zh-hans', _('Chinese (simplified)')),
     ('zh-hant', _('Chinese (traditional)')),
     ('cs', _('Czech')),
@@ -98,6 +99,7 @@ ALL_LANGUAGES = [
     ('pt-br', _('Portuguese (Brazil)')),
     ('ro', _('Romanian')),
     ('ru', _('Russian')),
+    ('sk', _('Slovak')),
     ('es', _('Spanish')),
     ('tr', _('Turkish')),
     ('uk', _('Ukrainian')),