diff --git a/po/POTFILES b/po/POTFILES
index 71653e4a0..97ff0528c 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -708,6 +708,8 @@ src/terminal/mouse.h
 src/terminal/palette.inc
 src/terminal/screen.c
 src/terminal/screen.h
+src/terminal/sixel.c
+src/terminal/sixel.h
 src/terminal/tab.c
 src/terminal/tab.h
 src/terminal/terminal.cpp