diff --git a/docker/worker/Dockerfile b/docker/worker/Dockerfile
index 7e5692a2..9b8c0225 100644
--- a/docker/worker/Dockerfile
+++ b/docker/worker/Dockerfile
@@ -1,23 +1,23 @@
 FROM kolab/centos7:latest
 
 RUN yum -y install rsyslog && \
     yum clean all
 
 COPY kolab-worker.service /etc/systemd/system/kolab-worker.service
 RUN rm -rf /etc/systemd/system/multi-target.wants/{avahi-daemon,sshd}.* && \
     ln -s /etc/systemd/system/kolab-worker.service \
         /etc/systemd/system/multi-user.target.wants/kolab-worker.service
 
 RUN sed -i -r -e 's/^SELINUX=.*$/SELINUX=permissive/g' /etc/selinux/config 2>/dev/null || :
 
 RUN yum -y install kolab-16-extras-fasttrack && \
     sed -i -r -e '/^ssl/d' /etc/yum.repos.d/*.repo && \
-    yum -y update php\* && \
+    yum -y update php\* pcre2\* && \
     yum clean all
 
 RUN useradd worker
 
 COPY kolab-worker.sh /usr/local/bin/
 RUN chmod 755 /usr/local/bin/kolab-worker.sh
 
 CMD ["/lib/systemd/systemd"]