diff --git a/jaraco/apt.py b/jaraco/apt.py
index b74246b..37bf90f 100644
--- a/jaraco/apt.py
+++ b/jaraco/apt.py
@@ -7,7 +7,7 @@
 import contextlib
 import itertools
 
-import yg.lockfile
+import yg.lockfile  # type: ignore[import-untyped]
 
 
 class PackageName(str):