diff --git a/acct-group/matterbridge/matterbridge-0.ebuild b/acct-group/matterbridge/matterbridge-0.ebuild
index 62359fb..e4857c4 100644
--- a/acct-group/matterbridge/matterbridge-0.ebuild
+++ b/acct-group/matterbridge/matterbridge-0.ebuild
@@ -5,4 +5,4 @@ EAPI=8
 inherit acct-group
 
 DESCRIPTION="A group for net-im/matterbridge"
-ACCT_GROUP_ID=113
+ACCT_GROUP_ID=-1
diff --git a/acct-user/matterbridge/matterbridge-0.ebuild b/acct-user/matterbridge/matterbridge-0.ebuild
index 6638aa1..4b86b6c 100644
--- a/acct-user/matterbridge/matterbridge-0.ebuild
+++ b/acct-user/matterbridge/matterbridge-0.ebuild
@@ -5,7 +5,7 @@ EAPI=8
 inherit acct-user
 
 DESCRIPTION="Unprivileged user for Matterbridge"
-ACCT_USER_ID=113
+ACCT_USER_ID=-1
 ACCT_USER_GROUPS=( matterbridge )
 
 acct-user_add_deps