diff --git a/libsrc/apple2/.cvsignore b/libsrc/apple2/.cvsignore
index a4181471b..254bf4a68 100644
--- a/libsrc/apple2/.cvsignore
+++ b/libsrc/apple2/.cvsignore
@@ -1,5 +1,6 @@
 *.emd
 *.joy
+*.ser
 *.tgi
 closedir.s
 opendir.s
diff --git a/libsrc/apple2enh/.cvsignore b/libsrc/apple2enh/.cvsignore
index 58093ab1b..581e5ff62 100644
--- a/libsrc/apple2enh/.cvsignore
+++ b/libsrc/apple2enh/.cvsignore
@@ -1,3 +1,4 @@
 *.emd
 *.joy
+*.ser
 *.tgi