diff --git a/build-scripts/postfix-install.sh b/build-scripts/postfix-install.sh
index 63804ef..9644fe4 100644
--- a/build-scripts/postfix-install.sh
+++ b/build-scripts/postfix-install.sh
@@ -35,7 +35,7 @@ do_alpine() {
 		netcat-openbsd \
 		opendkim-utils \
 		python3 \
-		py3-pip
+		py3-pip \
 		rsyslog \
 		supervisor \
 		tzdata