diff --git a/etc/watcher/oslo-config-generator/watcher.conf b/etc/watcher/oslo-config-generator/watcher.conf
index 6e51dea85..5474c575a 100644
--- a/etc/watcher/oslo-config-generator/watcher.conf
+++ b/etc/watcher/oslo-config-generator/watcher.conf
@@ -9,6 +9,7 @@ namespace = oslo.concurrency
 namespace = oslo.db
 namespace = oslo.log
 namespace = oslo.messaging
+namespace = oslo.middleware.http_proxy_to_wsgi
 namespace = oslo.policy
 namespace = oslo.reports
 namespace = oslo.service.periodic_task
diff --git a/releasenotes/notes/http_proxy_to_wsgi-81ab98b39038fb39.yaml b/releasenotes/notes/http_proxy_to_wsgi-81ab98b39038fb39.yaml
new file mode 100644
index 000000000..6b1708cd8
--- /dev/null
+++ b/releasenotes/notes/http_proxy_to_wsgi-81ab98b39038fb39.yaml
@@ -0,0 +1,8 @@
+---
+fixes:
+  - |
+    The ``http_proxy_to_wsgi`` middleware has been added to the api pipeline.
+    Now setting the ``[oslo_middleware] enable_proxy_headers_parsing`` option
+    to true enables parsing the HTTP headers set by forwarders, to detect
+    endpoint urls clients actually use.
+
diff --git a/watcher/api/app.py b/watcher/api/app.py
index 9d67066fe..bc5c65758 100644
--- a/watcher/api/app.py
+++ b/watcher/api/app.py
@@ -17,6 +17,7 @@
 #    under the License.
 
 
+from oslo_middleware import http_proxy_to_wsgi
 from oslo_middleware import request_id
 import pecan
 
@@ -56,6 +57,8 @@ def _wrap_app(app):
 
     app = request_id.RequestId(app)
 
+    app = http_proxy_to_wsgi.HTTPProxyToWSGI(app)
+
     return app