diff --git a/bitnami/mongodb/4.0/ol-7/Dockerfile b/bitnami/mongodb/4.0/ol-7/Dockerfile
index 078e1f9490cb..0fc3b4295b36 100644
--- a/bitnami/mongodb/4.0/ol-7/Dockerfile
+++ b/bitnami/mongodb/4.0/ol-7/Dockerfile
@@ -19,7 +19,7 @@ RUN curl --silent -L https://github.com/mikefarah/yq/releases/download/2.4.0/yq_
 COPY rootfs /
 RUN /postunpack.sh
 ENV BITNAMI_APP_NAME="mongodb" \
-    BITNAMI_IMAGE_VERSION="4.0.13-ol-7-r26" \
+    BITNAMI_IMAGE_VERSION="4.0.13-ol-7-r27" \
     NAMI_PREFIX="/.nami" \
     PATH="/opt/bitnami/mongodb/bin:$PATH"
 
diff --git a/bitnami/mongodb/4.0/ol-7/prebuildfs/libfs.sh b/bitnami/mongodb/4.0/ol-7/prebuildfs/libfs.sh
index 965ec431b898..10a24735c096 100644
--- a/bitnami/mongodb/4.0/ol-7/prebuildfs/libfs.sh
+++ b/bitnami/mongodb/4.0/ol-7/prebuildfs/libfs.sh
@@ -35,7 +35,7 @@ ensure_dir_exists() {
     local owner="${2:-}"
 
     mkdir -p "${dir}"
-    if [[ "$owner" != "" ]]; then
+    if [[ -n $owner ]]; then
         owned_by "$dir" "$owner"
     fi
 }
diff --git a/bitnami/mongodb/4.0/ol-7/prebuildfs/libnet.sh b/bitnami/mongodb/4.0/ol-7/prebuildfs/libnet.sh
index 8c34b4f8ca7d..f884b7661fd7 100644
--- a/bitnami/mongodb/4.0/ol-7/prebuildfs/libnet.sh
+++ b/bitnami/mongodb/4.0/ol-7/prebuildfs/libnet.sh
@@ -13,7 +13,7 @@
 #########################
 dns_lookup() {
     local host="${1:?host is missing}"
-    getent ahosts "$host" | awk '/STREAM/ {print $1 }'    
+    getent ahosts "$host" | awk '/STREAM/ {print $1 }'
 }
 
 ########################
@@ -36,9 +36,9 @@ get_machine_ip() {
 #########################
 is_hostname_resolved() {
     local -r host="${1:?missing value}"
-    if dns_lookup "$host" > /dev/null; then
+    if [[ -n "$(dns_lookup "$host")" ]]; then
         true
     else
-        false 
+        false
     fi
 }
diff --git a/bitnami/mongodb/README.md b/bitnami/mongodb/README.md
index 0fc4ab545775..6c21b317a774 100644
--- a/bitnami/mongodb/README.md
+++ b/bitnami/mongodb/README.md
@@ -48,7 +48,7 @@ Learn more about the Bitnami tagging policy and the difference between rolling t
 
 * [`4.2-ol-7`, `4.2.1-ol-7-r25` (4.2/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/4.2.1-ol-7-r25/4.2/ol-7/Dockerfile)
 * [`4.2-debian-9`, `4.2.1-debian-9-r18`, `4.2`, `4.2.1`, `4.2.1-r18` (4.2/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/4.2.1-debian-9-r18/4.2/debian-9/Dockerfile)
-* [`4.0-ol-7`, `4.0.13-ol-7-r26` (4.0/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/4.0.13-ol-7-r26/4.0/ol-7/Dockerfile)
+* [`4.0-ol-7`, `4.0.13-ol-7-r27` (4.0/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/4.0.13-ol-7-r27/4.0/ol-7/Dockerfile)
 * [`4.0-debian-9`, `4.0.13-debian-9-r17`, `4.0`, `4.0.13`, `4.0.13-r17`, `latest` (4.0/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/4.0.13-debian-9-r17/4.0/debian-9/Dockerfile)
 * [`3.6-ol-7`, `3.6.15-ol-7-r4` (3.6/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/3.6.15-ol-7-r4/3.6/ol-7/Dockerfile)
 * [`3.6-debian-9`, `3.6.15-debian-9-r2`, `3.6`, `3.6.15`, `3.6.15-r2` (3.6/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-mongodb/blob/3.6.15-debian-9-r2/3.6/debian-9/Dockerfile)