diff --git a/R/AggregateCovariates.R b/R/AggregateCovariates.R
index 8a3c220..6292b1d 100644
--- a/R/AggregateCovariates.R
+++ b/R/AggregateCovariates.R
@@ -260,7 +260,7 @@ computeTargetAggregateCovariateAnalyses <- function(
   message("Extracting target cohort counts")
   sql <- "select
   cohort_definition_id,
-  count(*) row_count,
+  count_big(*) row_count,
   count(distinct subject_id) person_count,
   min(datediff(day, cohort_start_date, cohort_end_date)) min_exposure_time,
   avg(datediff(day, cohort_start_date, cohort_end_date)) mean_exposure_time,
diff --git a/inst/settings/resultsDataModelSpecification.csv b/inst/settings/resultsDataModelSpecification.csv
index 3dc0e59..ecd5d9e 100644
--- a/inst/settings/resultsDataModelSpecification.csv
+++ b/inst/settings/resultsDataModelSpecification.csv
@@ -113,7 +113,7 @@ cohort_counts,start_anchor,varchar(15),No,No,No,No,The start anchor
 cohort_counts,end_anchor,varchar(15),No,No,No,No,The end anchor
 cohort_counts,min_prior_observation,int,No,No,No,No,Minimum time observed before index
 cohort_counts,outcome_washout_days,int,No,No,No,No,Patients with outcome during washout are excluded
-cohort_counts,row_count,int,Yes,No,No,No,The number of rows in each cohort
+cohort_counts,row_count,bigint,Yes,No,No,No,The number of rows in each cohort
 cohort_counts,person_count,int,Yes,No,No,No,The number of distinct people in each cohort
 cohort_counts,min_exposure_time,bigint,No,No,No,No,Minimum exposure time across cohort
 cohort_counts,mean_exposure_time,bigint,No,No,No,No,Mean exposure time across cohort
diff --git a/inst/sql/sql_server/migrations/Migration_2-v2_0_2_row_count_bigint.sql b/inst/sql/sql_server/migrations/Migration_2-v2_0_2_row_count_bigint.sql
new file mode 100644
index 0000000..5d6f626
--- /dev/null
+++ b/inst/sql/sql_server/migrations/Migration_2-v2_0_2_row_count_bigint.sql
@@ -0,0 +1,5 @@
+-- Database migrations for verion 2.0.2
+-- This migration updates the schema:
+ -- 1. To expand the row_count column to a bigint
+
+ALTER TABLE @database_schema.@table_prefixcohort_counts ALTER COLUMN row_count BIGINT;