diff --git a/Dockerfile b/Dockerfile
index 587ccff..c1de2dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,7 @@ RUN apk add --no-cache \
     nagios-plugins \
     nagios-plugins-dig \
     nagios-plugins-dns \
+    nagios-plugins-dummy \
     nagios-plugins-http \
     nagios-plugins-ldap \
     nagios-plugins-mysql \