diff --git a/server/Dockerfile b/server/Dockerfile
index c44383d..3857122 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -67,6 +67,7 @@ ARG PHP_VER
 # OS Packages
     RUN apt-get update; apt-get install -y --no-install-recommends \
         # Requirements:
+        procps \
         sudo \
         nginx \
         supervisor \