diff --git a/oslo_middleware/ssl.py b/oslo_middleware/ssl.py
index 8f0f01c..7853dc1 100644
--- a/oslo_middleware/ssl.py
+++ b/oslo_middleware/ssl.py
@@ -9,7 +9,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 # implied. See the License for the specific language governing permissions and
 # limitations under the License.
-
+from debtcollector import removals
 from oslo_config import cfg
 from oslo_middleware import base
 
@@ -17,12 +17,17 @@ from oslo_middleware import base
 OPTS = [
     cfg.StrOpt('secure_proxy_ssl_header',
                default='X-Forwarded-Proto',
+               deprecated_for_removal=True,
                help="The HTTP Header that will be used to determine what "
                     "the original request protocol scheme was, even if it was "
                     "hidden by an SSL termination proxy.")
 ]
 
 
+removals.removed_module(__name__,
+                        "oslo_middleware.http_proxy_to_wsgi")
+
+
 class SSLMiddleware(base.ConfigurableMiddleware):
     """SSL termination proxies middleware.
 
diff --git a/requirements.txt b/requirements.txt
index 3107167..d2dba26 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,3 +13,4 @@ oslo.utils>=2.0.0 # Apache-2.0
 six>=1.9.0
 stevedore>=1.5.0 # Apache-2.0
 WebOb>=1.2.3
+debtcollector>=0.3.0 # Apache-2.0