diff --git a/ansible/templates/google_symptoms-params-prod.json.j2 b/ansible/templates/google_symptoms-params-prod.json.j2
index 2ad806738..f2b4bd9f6 100644
--- a/ansible/templates/google_symptoms-params-prod.json.j2
+++ b/ansible/templates/google_symptoms-params-prod.json.j2
@@ -28,6 +28,7 @@
       "span_length": 14,
       "min_expected_lag": {"all": "3"},
       "max_expected_lag": {"all": "4"},
+      "dry_run": true,
       "suppressed_errors": [
         {"signal": "ageusia_raw_search"},
         {"signal": "ageusia_smoothed_search"},
diff --git a/google_symptoms/params.json.template b/google_symptoms/params.json.template
index 7a22c6d23..daa5666f4 100644
--- a/google_symptoms/params.json.template
+++ b/google_symptoms/params.json.template
@@ -16,6 +16,7 @@
       "span_length": 14,
       "min_expected_lag": {"all": "3"},
       "max_expected_lag": {"all": "4"},
+      "dry_run": true,
       "suppressed_errors": [
         {"signal": "ageusia_raw_search"},
         {"signal": "ageusia_smoothed_search"},