diff --git a/docker/monasca/monasca-grafana/Dockerfile.j2 b/docker/monasca/monasca-grafana/Dockerfile.j2
index 295f37ae2f..2309aff2a8 100644
--- a/docker/monasca/monasca-grafana/Dockerfile.j2
+++ b/docker/monasca/monasca-grafana/Dockerfile.j2
@@ -53,7 +53,8 @@ ARG monasca_grafana_url=https://github.com/monasca/grafana/archive/$monasca_graf
 # NOTE(yoctozepto): Update npm to 6.x version to avoid issues with metadata parsing.
 # NPM installs itself in /usr/local/bin (the default in Ubuntu) which is not in the PATH.
 # This is forced for all distros to avoid conflicts with native packages.
-RUN gem install rake:"~>12" fpm \
+# NOTE(mgoddard): childprocess 3.0.0 and ffi 1.13.0 depend on Ruby 2.3.
+RUN gem install rake:"~>12" ffi:"<1.13.0" childprocess:"<2.0.0" fpm \
     && curl -sSL -o /tmp/monasca-grafana.tgz ${monasca_grafana_url} \
     && mkdir -p ${monasca_grafana_build_path} \
     && tar --strip 1 -xvf /tmp/monasca-grafana.tgz -C ${monasca_grafana_build_path} \
diff --git a/docker/sensu/sensu-client/Dockerfile.j2 b/docker/sensu/sensu-client/Dockerfile.j2
index 9ccd4f3ae2..90f6bff452 100644
--- a/docker/sensu/sensu-client/Dockerfile.j2
+++ b/docker/sensu/sensu-client/Dockerfile.j2
@@ -9,13 +9,18 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
     {% set sensu_client_packages = [
         'ceph-common',
         'cyrus-sasl-devel',
-        'docker-client',
         'gcc-c++',
         'make',
         'mariadb',
         'ntp',
         'ruby-devel'
     ] %}
+    {% if base_distro != 'oraclelinux' %}
+    # NOTE(mgoddard): Installing docker-client fails on OracleLinux.
+    {% set sensu_client_packages = sensu_client_packages + [
+        'docker-client',
+    ] %}
+    {% endif %}
 
     {% if distro_python_version.startswith('3') %}
     {% set sensu_client_packages = sensu_client_packages + [
diff --git a/kolla/common/config.py b/kolla/common/config.py
index 365e469ebd..6d4ddab379 100755
--- a/kolla/common/config.py
+++ b/kolla/common/config.py
@@ -315,7 +315,7 @@ SOURCES = {
     'bifrost-base': {
         'type': 'url',
         'location': ('$tarballs_base/bifrost/'
-                     'bifrost-6.0.3.tar.gz')},
+                     'bifrost-6.0.4.tar.gz')},
     'blazar-base': {
         'type': 'url',
         'location': ('$tarballs_base/blazar/'