Allow custom animated icons on templates

I created a simple security setup with door/window sensors and wanted to use an animated icon when a door/window is triggered, but it appears I can only use mdi: xxxxxxx instead.

For example:

sensors:
 - platform: yr
  - platform: time_date
    display_options:
      - 'time'  
      
  - platform: template
    sensors:
      template_front_door:
          friendly_name: 'Front Door'
          value_template: >-
            {%- if is_state("sensor.vision_zd2102_eu_doorwindow_sensor_access_control_2", "22") -%}
              Open
            {%- else -%}
              Closed
            {%- endif %}
          icon_template: >
            {% if is_state("sensor.vision_zd2102_eu_doorwindow_sensor_access_control_2", "22") %}
              mdi:door-open
            {% else %}
              mdi:door-closed
            {% endif %}

      template_patio_door:
          friendly_name: 'Patio Door'
          value_template: >-
            {%- if is_state("sensor.vision_zd2102_eu_doorwindow_sensor_access_control_3", "22") -%}
              Open
            {%- else -%}
              Closed
            {%- endif %}
          icon_template: >-
            {% if is_state("sensor.vision_zd2102_eu_doorwindow_sensor_access_control_3", "22") %}
              /local/alert_alarm.gif
            {% else %}
              /local/alert_ok.gif
            {% endif %}

alert_alarm
alert_ok

Have you tried:
entity_picture_template:
Instead of icon_tempalte?

Thanks, overlooked that option and that did the trick.