diff --git a/tests/test_in_vterm/test_tmux.py b/tests/test_in_vterm/test_tmux.py
index 167596e6..f4960423 100755
--- a/tests/test_in_vterm/test_tmux.py
+++ b/tests/test_in_vterm/test_tmux.py
@@ -170,6 +170,7 @@ def main():
 	finally:
 		check_call([tmux_exe, '-S', socket_path, 'kill-server'], env={
 			'PATH': vterm_path,
+			'LD_LIBRARY_PATH': os.environ.get('LD_LIBRARY_PATH', ''),
 		})