diff --git a/sql/upgrade/4.0/README.rst b/sql/upgrade/4.0/README.rst
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+4.0 Database Updates
+====================
+
+This batch makes the following database changes:
+
+bug 738323
+	add column for startup crash count to TCBS
+	
+...
+
+The above changes should take only a few minutes to deploy.
+This upgrade does not require a downtime.
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diff --git a/sql/upgrade/4.0/add_startup_crashes_col.sql b/sql/upgrade/4.0/add_startup_crashes_col.sql
new file mode 100644
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+++ b/sql/upgrade/4.0/add_startup_crashes_col.sql
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+\set ON_ERROR_STOP 1
+
+alter table tcbs add column startup_count int;
+
diff --git a/sql/upgrade/4.0/update_tcbs.sql b/sql/upgrade/4.0/update_tcbs.sql
new file mode 100644
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+++ b/sql/upgrade/4.0/update_tcbs.sql
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+\set ON_ERROR_STOP 1
+
+create or replace function update_tcbs (
+	updateday date, checkdata boolean default true )
+RETURNS BOOLEAN
+LANGUAGE plpgsql
+SET work_mem = '512MB'
+SET temp_buffers = '512MB'
+AS $f$
+BEGIN
+-- this procedure goes throught the daily TCBS update for the
+-- new TCBS table
+-- designed to be run only once for each day
+-- this new version depends on reports_clean
+
+-- check that it hasn't already been run
+
+IF checkdata THEN
+	PERFORM 1 FROM tcbs
+	WHERE report_date = updateday LIMIT 1;
+	IF FOUND THEN
+		RAISE EXCEPTION 'TCBS has already been run for the day %.',updateday;
+	END IF;
+END IF;
+
+-- check if reports_clean is complete
+IF NOT reports_clean_done(updateday) THEN
+	IF checkdata THEN
+		RAISE EXCEPTION 'Reports_clean has not been updated to the end of %',updateday;
+	ELSE
+		RETURN TRUE;
+	END IF;
+END IF;
+
+-- populate the matview
+
+INSERT INTO tcbs (
+	signature_id, report_date, product_version_id,
+	process_type, release_channel,
+	report_count, win_count, mac_count, lin_count, hang_count,
+	startup_count
+)
+SELECT signature_id, updateday, product_version_id,
+	process_type, release_channel,
+	count(*),
+	sum(case when os_name = 'Windows' THEN 1 else 0 END),
+	sum(case when os_name = 'Mac OS X' THEN 1 else 0 END),
+	sum(case when os_name = 'Linux' THEN 1 else 0 END),
+    count(hang_id),
+    sum(case when uptime < INTERVAL '1 minute' THEN 1 else 0 END)
+FROM reports_clean
+	JOIN product_versions USING (product_version_id)
+	WHERE utc_day_is(date_processed, updateday)
+		AND tstz_between(date_processed, build_date, sunset_date)
+GROUP BY signature_id, updateday, product_version_id,
+	process_type, release_channel;
+
+ANALYZE tcbs;
+
+-- tcbs_ranking removed until it's being used
+
+-- done
+RETURN TRUE;
+END;
+$f$;
+
+
+
+
+
+
+
+
+
+
+
diff --git a/sql/upgrade/4.0/upgrade.sh b/sql/upgrade/4.0/upgrade.sh
new file mode 100755
index 0000000000..45cdd87744
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+++ b/sql/upgrade/4.0/upgrade.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+#please see README
+
+set -e
+
+CURDIR=$(dirname $0)
+VERSION=4.0
+
+#echo '*********************************************************'
+#echo 'support functions'
+#psql -f ${CURDIR}/support_functions.sql breakpad
+
+echo '*********************************************************'
+echo 'add startup crash count to TCBS'
+echo 'bug 738323'
+psql -f ${CURDIR}/add_startup_crashes_col.sql breakpad
+psql -f ${CURDIR}/update_tcbs.sql breakpad
+
+#change version in DB
+psql -c "SELECT update_socorro_db_version( '$VERSION' )" breakpad
+
+echo "$VERSION upgrade done"
+
+exit 0
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