diff --git a/docker/gnocchi/gnocchi-api/extend_start.sh b/docker/gnocchi/gnocchi-api/extend_start.sh
index 54dbe2b147..e67dff0dff 100644
--- a/docker/gnocchi/gnocchi-api/extend_start.sh
+++ b/docker/gnocchi/gnocchi-api/extend_start.sh
@@ -4,7 +4,7 @@
 # results in the container not being able to restart. (bug #1489676, 1557036)
 if [[ "${KOLLA_BASE_DISTRO}" =~ debian|ubuntu ]]; then
     # Loading Apache2 ENV variables
-    source /etc/apache2/envvars
+    . /etc/apache2/envvars
     rm -rf /var/run/apache2/*
 else
     rm -rf /var/run/httpd/* /run/httpd/* /tmp/httpd*
diff --git a/docker/nova/nova-placement-api/extend_start.sh b/docker/nova/nova-placement-api/extend_start.sh
index 904db04b27..4596bf6a1d 100644
--- a/docker/nova/nova-placement-api/extend_start.sh
+++ b/docker/nova/nova-placement-api/extend_start.sh
@@ -4,7 +4,7 @@
 # results in the container not being able to restart. (bug #1489676, 1557036)
 if [[ "${KOLLA_BASE_DISTRO}" =~ debian|ubuntu ]]; then
     # Loading Apache2 ENV variables
-    source /etc/apache2/envvars
+    . /etc/apache2/envvars
     rm -rf /var/run/apache2/*
 else
     rm -rf /var/run/httpd/* /run/httpd/* /tmp/httpd*
diff --git a/docker/panko/panko-api/extend_start.sh b/docker/panko/panko-api/extend_start.sh
index cf3cc3bd46..423a8e2b85 100644
--- a/docker/panko/panko-api/extend_start.sh
+++ b/docker/panko/panko-api/extend_start.sh
@@ -4,7 +4,7 @@
 # results in the container not being able to restart. (bug #1489676, 1557036)
 if [[ "${KOLLA_BASE_DISTRO}" =~ debian|ubuntu ]]; then
     # Loading Apache2 ENV variables
-    source /etc/apache2/envvars
+    . /etc/apache2/envvars
     rm -rf /var/run/apache2/*
 else
     rm -rf /var/run/httpd/* /run/httpd/* /tmp/httpd*
diff --git a/tools/setup_Debian.sh b/tools/setup_Debian.sh
index 76e5dc3b61..f217d5bc25 100755
--- a/tools/setup_Debian.sh
+++ b/tools/setup_Debian.sh
@@ -35,7 +35,7 @@ function setup_disk {
 # (SamYaple)TODO: Remove the path overriding
 export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
 
-source /etc/lsb-release
+. /etc/lsb-release
 
 # Setup Docker repo and add signing key
 sudo apt-get update
diff --git a/tools/setup_gate.sh b/tools/setup_gate.sh
index 5635be99ad..454544029b 100755
--- a/tools/setup_gate.sh
+++ b/tools/setup_gate.sh
@@ -6,8 +6,8 @@ set -o errexit
 # Enable unbuffered output for Ansible in Jenkins.
 export PYTHONUNBUFFERED=1
 
-source /etc/nodepool/provider
-source /etc/ci/mirror_info.sh
+. /etc/nodepool/provider
+. /etc/ci/mirror_info.sh
 
 # Just for mandre :)
 if [[ ! -f /etc/sudoers.d/jenkins ]]; then