diff --git a/src/gp_activetable.c b/src/gp_activetable.c
index 0a78c64c..e06b613a 100644
--- a/src/gp_activetable.c
+++ b/src/gp_activetable.c
@@ -69,7 +69,7 @@ TimestampTz active_tables_last_overflow_report = 0;
  * dbid will be removed from it when droping diskquota extension
  */
 HTAB *altered_reloid_cache = NULL; // Set<Oid>
-time_t altered_reloid_cache_last_overflow_report = 0;
+TimestampTz altered_reloid_cache_last_overflow_report = 0;
 
 #define ALTERED_RELOID_CACHE_ENTER(keyPtr, foundPtr)                                                            \
 	shm_hash_enter(altered_reloid_cache, keyPtr, foundPtr, diskquota_max_active_tables,                         \
diff --git a/src/quotamodel.c b/src/quotamodel.c
index 612ebfac..533becfb 100644
--- a/src/quotamodel.c
+++ b/src/quotamodel.c
@@ -204,8 +204,8 @@ static TimestampTz table_size_last_overflow_report = 0;
 static HTAB *disk_quota_reject_map       = NULL;
 static HTAB *local_disk_quota_reject_map = NULL;
 
-static time_t disk_quota_reject_last_overflow_report       = 0;
-static time_t local_disk_quota_reject_last_overflow_report = 0;
+static TimestampTz disk_quota_reject_last_overflow_report       = 0;
+static TimestampTz local_disk_quota_reject_last_overflow_report = 0;
 
 #define REJECT_MAP_ENTER(keyPtr, foundPtr)                                                 \
 	shm_hash_enter(disk_quota_reject_map, keyPtr, foundPtr, MAX_DISK_QUOTA_REJECT_ENTRIES, \
diff --git a/src/relation_cache.c b/src/relation_cache.c
index f45b541d..94633903 100644
--- a/src/relation_cache.c
+++ b/src/relation_cache.c
@@ -32,7 +32,7 @@
 HTAB *relation_cache = NULL;
 HTAB *relid_cache    = NULL;
 
-extern time_t active_tables_last_overflow_report;
+extern TimestampTz active_tables_last_overflow_report;
 
 #define RELATION_CACHE_ENTER(keyPtr, foundPtr)                                                            \
 	shm_hash_enter(relation_cache, keyPtr, foundPtr, diskquota_max_active_tables,                         \