diff --git a/bitnami/airflow-worker/2/debian-10/Dockerfile b/bitnami/airflow-worker/2/debian-10/Dockerfile
index fda77f62a170..2439a3d144d6 100644
--- a/bitnami/airflow-worker/2/debian-10/Dockerfile
+++ b/bitnami/airflow-worker/2/debian-10/Dockerfile
@@ -28,7 +28,7 @@ RUN /opt/bitnami/scripts/airflow-worker/postunpack.sh
 RUN /opt/bitnami/scripts/locales/add-extra-locales.sh
 ENV AIRFLOW_HOME="/opt/bitnami/airflow" \
     BITNAMI_APP_NAME="airflow-worker" \
-    BITNAMI_IMAGE_VERSION="2.1.4-debian-10-r20" \
+    BITNAMI_IMAGE_VERSION="2.1.4-debian-10-r21" \
     C_FORCE_ROOT="True" \
     LANG="en_US.UTF-8" \
     LANGUAGE="en_US:en" \
diff --git a/bitnami/airflow-worker/2/debian-10/prebuildfs/opt/bitnami/scripts/libos.sh b/bitnami/airflow-worker/2/debian-10/prebuildfs/opt/bitnami/scripts/libos.sh
index 4265aae0a673..6bd564773acb 100644
--- a/bitnami/airflow-worker/2/debian-10/prebuildfs/opt/bitnami/scripts/libos.sh
+++ b/bitnami/airflow-worker/2/debian-10/prebuildfs/opt/bitnami/scripts/libos.sh
@@ -39,18 +39,24 @@ group_exists() {
 # Arguments:
 #   $1 - group
 # Flags:
+#   -i|--gid - the ID for the new group
 #   -s|--system - Whether to create new user as system user (uid <= 999)
 # Returns:
 #   None
 #########################
 ensure_group_exists() {
     local group="${1:?group is missing}"
+    local gid=""
     local is_system_user=false
 
     # Validate arguments
     shift 1
     while [ "$#" -gt 0 ]; do
         case "$1" in
+            -i|--gid)
+                shift
+                gid="${1:?missing gid}"
+                ;;
             -s|--system)
                 is_system_user=true
                 ;;
@@ -64,6 +70,13 @@ ensure_group_exists() {
 
     if ! group_exists "$group"; then
         local -a args=("$group")
+        if [[ -n "$gid" ]]; then
+            if group_exists "$gid" ; then
+                error "The GID $gid is already in use." >&2
+                return 1
+            fi
+            args+=("--gid" "$gid")
+        fi
         $is_system_user && args+=("--system")
         groupadd "${args[@]}" >/dev/null 2>&1
     fi
@@ -74,7 +87,9 @@ ensure_group_exists() {
 # Arguments:
 #   $1 - user
 # Flags:
+#   -i|--uid - the ID for the new user
 #   -g|--group - the group the new user should belong to
+#   -a|--append-groups - comma-separated list of supplemental groups to append to the new user
 #   -h|--home - the home directory for the new user
 #   -s|--system - whether to create new user as system user (uid <= 999)
 # Returns:
@@ -82,7 +97,9 @@ ensure_group_exists() {
 #########################
 ensure_user_exists() {
     local user="${1:?user is missing}"
+    local uid=""
     local group=""
+    local append_groups=""
     local home=""
     local is_system_user=false
 
@@ -90,10 +107,18 @@ ensure_user_exists() {
     shift 1
     while [ "$#" -gt 0 ]; do
         case "$1" in
+            -i|--uid)
+                shift
+                uid="${1:?missing uid}"
+                ;;
             -g|--group)
                 shift
                 group="${1:?missing group}"
                 ;;
+            -a|--append-groups)
+                shift
+                append_groups="${1:?missing append_groups}"
+                ;;
             -h|--home)
                 shift
                 home="${1:?missing home directory}"
@@ -111,7 +136,15 @@ ensure_user_exists() {
 
     if ! user_exists "$user"; then
         local -a user_args=("-N" "$user")
-        $is_system_user && user_args+=("--system")
+        if [[ -n "$uid" ]]; then
+            if user_exists "$uid" ; then
+                error "The UID $uid is already in use."
+                return 1
+            fi
+            user_args+=("--uid" "$uid")
+        else
+            $is_system_user && user_args+=("--system")
+        fi
         useradd "${user_args[@]}" >/dev/null 2>&1
     fi
 
@@ -122,6 +155,15 @@ ensure_user_exists() {
         usermod -g "$group" "$user" >/dev/null 2>&1
     fi
 
+    if [[ -n "$append_groups" ]]; then
+        local -a groups
+        read -ra groups <<< "$(tr ',;' ' ' <<< "$append_groups")"
+        for group in "${groups[@]}"; do
+            ensure_group_exists "$group"
+            usermod -aG "$group" "$user" >/dev/null 2>&1
+        done
+    fi
+
     if [[ -n "$home" ]]; then
         mkdir -p "$home"
         usermod -d "$home" "$user" >/dev/null 2>&1
@@ -403,3 +445,4 @@ generate_sha_hash() {
     local -r algorithm="${2:-1}"
     echo -n "$str" | "sha${algorithm}sum" | awk '{print $1}'
 }
+
diff --git a/bitnami/airflow-worker/README.md b/bitnami/airflow-worker/README.md
index 7615f22b31bb..e8172d9ff2a9 100644
--- a/bitnami/airflow-worker/README.md
+++ b/bitnami/airflow-worker/README.md
@@ -33,7 +33,7 @@ You can find the default credentials and available configuration options in the
 Learn more about the Bitnami tagging policy and the difference between rolling tags and immutable tags [in our documentation page](https://docs.bitnami.com/tutorials/understand-rolling-tags-containers/).
 
 
-* [`2`, `2-debian-10`, `2.1.4`, `2.1.4-debian-10-r20`, `latest` (2/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-airflow-worker/blob/2.1.4-debian-10-r20/2/debian-10/Dockerfile)
+* [`2`, `2-debian-10`, `2.1.4`, `2.1.4-debian-10-r21`, `latest` (2/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-airflow-worker/blob/2.1.4-debian-10-r21/2/debian-10/Dockerfile)
 * [`1`, `1-debian-10`, `1.10.15`, `1.10.15-debian-10-r186` (1/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-airflow-worker/blob/1.10.15-debian-10-r186/1/debian-10/Dockerfile)
 
 Subscribe to project updates by watching the [bitnami/airflow GitHub repo](https://github.com/bitnami/bitnami-docker-airflow-worker).