diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5253163..724560c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -210,8 +210,8 @@ Aggregate of [https_crawl](#https_crawl) that creates latest crawl sessions base
 |requests|Number of comparison requests actually made during the crawl session|integer||
 |session_request_limit|The number of comparisons wanted for the session|integer||
 |is_redirect|Whether the domain was actually crawled or is a redirect from another host in the table that was crawled|boolean||
-|max_https_crawl_id|https_crawl.id of last comparison made during crawl session|bigint||
 |redirect_hosts|key/value pairs of hosts and the number of redirects to it|jsonb||
+|updated|When last updated|timestamp with time zone||
 
 #### https_upgrade_metrics
 
diff --git a/https_crawl.pl b/https_crawl.pl
index f134662..4d43638 100755
--- a/https_crawl.pl
+++ b/https_crawl.pl
@@ -333,7 +333,6 @@ sub crawl_sites{
                     mixed_requests
                     max_ss_diff
                     redirects
-                    max_id
                     requests
                     is_redirect
                     redirect_hosts'
@@ -412,18 +411,18 @@ sub prep_db {
                 domain,
                 https,
                 http_and_https,
-                https_errs, http,
+                https_errs,
+                http,
                 unknown,
                 autoupgrade,
                 mixed_requests,
                 max_screenshot_diff,
                 redirects,
-                max_https_crawl_id,
                 requests,
                 is_redirect,
                 redirect_hosts,
                 session_request_limit)
-                values (?,?,?,?,?,?,?,?,?,?,?,?,?,?,$CC{URLS_PER_SITE})
+                values (?,?,?,?,?,?,?,?,?,?,?,?,?,$CC{URLS_PER_SITE})
             on conflict (domain) do update set (
                 https,
                 http_and_https,
@@ -434,11 +433,11 @@ sub prep_db {
                 mixed_requests,
                 max_screenshot_diff,
                 redirects,
-                max_https_crawl_id,
                 requests,
                 is_redirect,
                 redirect_hosts,
-                session_request_limit
+                session_request_limit,
+                updated
             ) = (
                 EXCLUDED.https,
                 EXCLUDED.http_and_https,
@@ -449,11 +448,12 @@ sub prep_db {
                 EXCLUDED.mixed_requests,
                 EXCLUDED.max_screenshot_diff,
                 EXCLUDED.redirects,
-                EXCLUDED.max_https_crawl_id,
                 EXCLUDED.requests,
                 EXCLUDED.is_redirect,
                 EXCLUDED.redirect_hosts,
-                EXCLUDED.session_request_limit)
+                EXCLUDED.session_request_limit,
+                now()
+            )
             where
                 EXCLUDED.is_redirect = false or
                 https_crawl_aggregate.is_redirect = true
diff --git a/sql/https_crawl_aggregate.sql b/sql/https_crawl_aggregate.sql
index 354edf3..5157a42 100644
--- a/sql/https_crawl_aggregate.sql
+++ b/sql/https_crawl_aggregate.sql
@@ -37,8 +37,8 @@ CREATE TABLE https_crawl_aggregate (
     requests integer NOT NULL,
     session_request_limit integer NOT NULL,
     is_redirect boolean DEFAULT false NOT NULL,
-    max_https_crawl_id bigint NOT NULL,
-    redirect_hosts jsonb
+    redirect_hosts jsonb,
+    updated timestamp with time zone DEFAULT now() NOT NULL
 );