diff --git a/roles/taskotron/resultsdb-backend/templates/settings.py.j2 b/roles/taskotron/resultsdb-backend/templates/settings.py.j2
index 828c6a3ba5..3b4f004942 100644
--- a/roles/taskotron/resultsdb-backend/templates/settings.py.j2
+++ b/roles/taskotron/resultsdb-backend/templates/settings.py.j2
@@ -14,3 +14,4 @@ FILE_LOGGING = False
 LOGFILR = '/var/log/resultsdb/resultsdb.log'
 SYSLOG_LOGGING = False
 STREAM_LOGGING = True
+PREFERRED_URL_SCHEME = 'https'
diff --git a/roles/taskotron/resultsdb-frontend/templates/settings.py.j2 b/roles/taskotron/resultsdb-frontend/templates/settings.py.j2
index f8a94b52fd..31ed052a2b 100644
--- a/roles/taskotron/resultsdb-frontend/templates/settings.py.j2
+++ b/roles/taskotron/resultsdb-frontend/templates/settings.py.j2
@@ -14,3 +14,4 @@ FILE_LOGGING = False
 LOGFILR = '/var/log/resultsdb_frontend/resultsdb_frontend.log'
 SYSLOG_LOGGING = False
 STREAM_LOGGING = True
+PREFERRED_URL_SCHEME = 'https'