diff --git a/cje-production/dockerfiles/centos-gtk4-mutter/9-gtk4/Dockerfile b/cje-production/dockerfiles/centos-gtk4-mutter/9-gtk4/Dockerfile
index ff1e825f59f..7210335cdaf 100644
--- a/cje-production/dockerfiles/centos-gtk4-mutter/9-gtk4/Dockerfile
+++ b/cje-production/dockerfiles/centos-gtk4-mutter/9-gtk4/Dockerfile
@@ -17,6 +17,7 @@ RUN dnf -y update && dnf -y install \
       tigervnc \
       mutter \
       xorg-x11-server-utils \
+      procps-ng \
       mesa-libGL \
       xorg-x11-fonts-misc \
       xorg-x11-fonts-75dpi \
diff --git a/cje-production/dockerfiles/debian/swtnativebuild/Dockerfile b/cje-production/dockerfiles/debian/swtnativebuild/Dockerfile
index 2dffea481bb..b2891acc39c 100644
--- a/cje-production/dockerfiles/debian/swtnativebuild/Dockerfile
+++ b/cje-production/dockerfiles/debian/swtnativebuild/Dockerfile
@@ -11,6 +11,7 @@ ENV LANG=en_US.UTF-8
 RUN apt-get update -qq && apt-get install -qq -y \
       locales \
       build-essential \
+      procps \
       git \
       libgtk-3-dev \
       libgtk-4-dev \
diff --git a/cje-production/dockerfiles/opensuse-gtk3-metacity/15-gtk3/Dockerfile b/cje-production/dockerfiles/opensuse-gtk3-metacity/15-gtk3/Dockerfile
index c841ed279ab..206c879ba1e 100644
--- a/cje-production/dockerfiles/opensuse-gtk3-metacity/15-gtk3/Dockerfile
+++ b/cje-production/dockerfiles/opensuse-gtk3-metacity/15-gtk3/Dockerfile
@@ -11,6 +11,7 @@ RUN zypper --non-interactive update && zypper --non-interactive install \
       libgtk-3-0 \
       xorg-x11-Xvnc \
       tigervnc \
+      procps \
       metacity \
       xorg-x11-fonts \
       dejavu-fonts \