diff --git a/debian/requirements.py310.in b/debian/requirements.py310.in
index 50bdcb5..1c659bf 100644
--- a/debian/requirements.py310.in
+++ b/debian/requirements.py310.in
@@ -8,3 +8,6 @@
 
 # Python 3.10 additional dependency for anyio
 exceptiongroup==1.2.2
+
+# Python 3.10 additional dependency for moz-l10n
+tomli==1.1.0