diff --git a/samples/html/help/.cvsignore b/samples/html/help/.cvsignore
index 1f0ab36451..14c6c43b68 100644
--- a/samples/html/help/.cvsignore
+++ b/samples/html/help/.cvsignore
@@ -5,3 +5,5 @@ helpM*Data
 *Carbon?Debug*
 *Carbon?Release*
 help
+another.hhp.cached
+testing.hhp.cached