diff --git a/debian/control b/debian/control
index 5cb0084..4fa3802 100644
--- a/debian/control
+++ b/debian/control
@@ -32,6 +32,7 @@ Depends: iso-codes,
          ${shlibs:Depends},
          python3,
          python3-gi,
+         gir1.2-gtksource-4,
          xapps-common (>= 1.9.0),
          zenity
 XB-Python-Version: ${python:Versions}