diff --git a/ChangeLog b/ChangeLog
index 7d5d8d6..b696cfd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 # ChangeLog for squashmount
 
+*squashmount-15.4.2
+	Martin Väth <martin at mvath.de>:
+	- Treat 0 and - as false only if no symbol follows
+
+*squashmount-15.4.1
+	Martin Väth <martin at mvath.de>:
+	- Fix zsh completion return value
+
 *squashmount-15.4.0_p2
 	Martin Väth <martin at mvath.de>:
 	- Provide etc/revdep-rebuild/66-squashmount for python implementation
diff --git a/bin/squashmount b/bin/squashmount
index 2a8f730..45149a8 100755
--- a/bin/squashmount
+++ b/bin/squashmount
@@ -1,6 +1,6 @@
 #!/usr/bin/env perl
 BEGIN { require 5.022 }
-package Squashmount v15.4.1;
+package Squashmount v15.4.2;
 
 use strict;
 use warnings;
diff --git a/etc/portage/repo.postsync.d/10-squashmount-gentoo b/etc/portage/repo.postsync.d/10-squashmount-gentoo
index 0fc118a..40601a7 100755
--- a/etc/portage/repo.postsync.d/10-squashmount-gentoo
+++ b/etc/portage/repo.postsync.d/10-squashmount-gentoo
@@ -25,7 +25,7 @@ esac
 
 yesno() {
 	case ${1:-n} in
-	[nNfF0-]*|[oO][fF]*)
+	[nNfF]*|[oO][fF]*|0|-)
 		return 1;;
 	esac
 	: