diff --git a/sql/util/manifests.sql b/sql/util/manifests.sql
index b4e57673df1..8537d4aabd9 100644
--- a/sql/util/manifests.sql
+++ b/sql/util/manifests.sql
@@ -1,5 +1,5 @@
 SELECT
-  date,
+  DISTINCT date,
   client,
   page,
   url,
diff --git a/sql/util/pwa_candidates.sql b/sql/util/pwa_candidates.sql
index be98a412441..37501c7fa19 100644
--- a/sql/util/pwa_candidates.sql
+++ b/sql/util/pwa_candidates.sql
@@ -6,7 +6,7 @@ RETURNS STRING LANGUAGE js AS """
 """;
 
 SELECT
-  date,
+  DISTINCT date,
   client,
   REGEXP_REPLACE(page, "^http:", "https:") AS pwa_url,
   pathResolve(REGEXP_REPLACE(page, "^http:", "https:"),
diff --git a/sql/util/service_workers.sql b/sql/util/service_workers.sql
index d140e20246e..4ebab4c854f 100644
--- a/sql/util/service_workers.sql
+++ b/sql/util/service_workers.sql
@@ -1,5 +1,5 @@
 SELECT
-  date,
+  DISTINCT date,
   client,
   page,
   url,