diff --git a/images/salt-master/Dockerfile b/images/salt-master/Dockerfile
index 47ab521442..57bbdc87d2 100644
--- a/images/salt-master/Dockerfile
+++ b/images/salt-master/Dockerfile
@@ -25,7 +25,7 @@ gpgkey=https://repo.saltproject.io/py3/redhat/\$releasever/\$basearch/archive/%s
  && dnf install -y git \
  && pip3 install "git+https://github.com/kubernetes-client/python.git@cef5e9bd10a6d5ca4d9c83da46ccfe2114cdaaf8#egg=kubernetes" \
  && dnf remove -y git \
- && dnf install -y salt-master salt-api salt-ssh openssh-clients \
+ && dnf install -y salt-master salt-api salt-ssh openssh-clients pgrep \
  && dnf clean all
 
 # Set up locale