diff --git a/roles/openshift-apps/librariesio2fedmsg/files/deploymentconfig.yml b/roles/openshift-apps/librariesio2fedmsg/files/deploymentconfig.yml
index b859ec4a0d..3d2488f78c 100644
--- a/roles/openshift-apps/librariesio2fedmsg/files/deploymentconfig.yml
+++ b/roles/openshift-apps/librariesio2fedmsg/files/deploymentconfig.yml
@@ -63,6 +63,7 @@ items:
           volumeMounts:
           - name: fedmsg-config-volume
             mountPath: /etc/fedmsg.d/
+            readOnly: true
         volumes:
         - name: fedmsg-config-volume
           configMap: