diff --git a/support/testing/tests/package/sample_python_gobject.py b/support/testing/tests/package/sample_python_gobject.py
index 4490a73613..1c2b327206 100644
--- a/support/testing/tests/package/sample_python_gobject.py
+++ b/support/testing/tests/package/sample_python_gobject.py
@@ -4,6 +4,12 @@ from gi.repository import GLib
 
 
 def main():
+    # In Glib >= 2.88, GLib.unix_signal_add has been moved to a
+    # separate platform-specific library. This break backward
+    # compatibility from GLib-2.0.
+    # A workaround has been applied to pygobject >= 3.55.3
+    # https://gitlab.gnome.org/GNOME/pygobject/-/commit/74e4e0f40a66436a55c72d4a6e6058c1f91a7310
+    unix_signal_add = GLib.unix_signal_add_full  # noqa
     sh_path = GLib.find_program_in_path('sh')
     if sh_path == "/bin/sh":
         return True