diff --git a/wis2-gdc-api/Dockerfile b/wis2-gdc-api/Dockerfile
index 3c8370f..95b123f 100644
--- a/wis2-gdc-api/Dockerfile
+++ b/wis2-gdc-api/Dockerfile
@@ -28,7 +28,7 @@ ENV PYGEOAPI_OPENAPI=/pygeoapi/local.openapi.yml
 
 RUN apt-get update && \
     apt-get install -y curl && \
-    pip3 install pywcmp && \
+    pip3 install -r requirements.txt && \
     pywcmp bundle sync
 
 COPY ./wis2-gdc-api.yml /pygeoapi/local.config.yml
diff --git a/wis2-gdc-api/app.py b/wis2-gdc-api/app.py
index 60d0d27..1a67daf 100644
--- a/wis2-gdc-api/app.py
+++ b/wis2-gdc-api/app.py
@@ -21,8 +21,9 @@
 
 import os
 
-from flask import Flask, send_file
+from flask import Flask, Response, send_file
 from pygeoapi.flask_app import BLUEPRINT as pygeoapi_blueprint
+import requests
 
 app = Flask(__name__, static_url_path='/static')
 app.url_map.strict_slashes = False
@@ -50,9 +51,10 @@ def archive():
 @app.route('/wis2-gdc-metrics.txt')
 def metrics():
 
-    metrics_file = os.environ.get('WIS2_GDC_OPENMETRICS_FILE')
+    collector_url = os.environ.get('WIS2_GDC_COLLECTOR_URL')
 
     try:
-        return send_file(metrics_file, mimetype='text/plain')
-    except FileNotFoundError:
-        return 'Not Found', 404
+        response = requests.get(collector_url).text
+        return Response(response, mimetype='text/plain')
+    except Exception:
+        return 'Internal Server Error', 500
diff --git a/wis2-gdc-api/requirements.txt b/wis2-gdc-api/requirements.txt
new file mode 100644
index 0000000..dc457db
--- /dev/null
+++ b/wis2-gdc-api/requirements.txt
@@ -0,0 +1,2 @@
+pywis-pubsub
+requests
diff --git a/wis2-gdc.env b/wis2-gdc.env
index 0c8dc1f..4a9bae9 100644
--- a/wis2-gdc.env
+++ b/wis2-gdc.env
@@ -5,6 +5,7 @@ export WIS2_GDC_BACKEND_TYPE=Elasticsearch
 export WIS2_GDC_BACKEND_CONNECTION=http://elasticsearch:9200/wis2-discovery-metadata
 export WIS2_GDC_BROKER_URL=mqtt://wis2-gdc:wis2-gdc@wis2-gdc-broker:1883
 export WIS2_GDC_CENTRE_ID=ca-eccc-msc-global-discovery-catalogue
+export WIS2_GDC_COLLECTOR_URL=http://wis2-gdc-metrics-collector:8006
 export WIS2_GDC_GB=mqtts://everyone:everyone@globalbroker.meteo.fr:8883
 export WIS2_GDC_GB_TOPIC=origin/a/wis2/+/metadata/#
 export WIS2_GDC_METADATA_ARCHIVE_ZIPFILE=/data/wis2-gdc-archive.zip