diff --git a/posthog/clickhouse/migrations/0055_add_minmax_index_on_inserted_at.py b/posthog/clickhouse/migrations/0055_add_minmax_index_on_inserted_at.py
new file mode 100644
index 0000000000000..a1458a2b4a391
--- /dev/null
+++ b/posthog/clickhouse/migrations/0055_add_minmax_index_on_inserted_at.py
@@ -0,0 +1,7 @@
+from posthog.clickhouse.client.migration_tools import run_sql_with_exceptions
+from posthog.models.event.sql import EVENTS_TABLE_INSERTED_AT_INDEX_SQL, EVENTS_TABLE_MATERIALIZE_INSERTED_AT_INDEX_SQL
+
+operations = [
+    run_sql_with_exceptions(EVENTS_TABLE_INSERTED_AT_INDEX_SQL),
+    run_sql_with_exceptions(EVENTS_TABLE_MATERIALIZE_INSERTED_AT_INDEX_SQL),
+]
diff --git a/posthog/models/event/sql.py b/posthog/models/event/sql.py
index 410904ba006d4..8214ac90fdce0 100644
--- a/posthog/models/event/sql.py
+++ b/posthog/models/event/sql.py
@@ -106,6 +106,18 @@
     storage_policy=STORAGE_POLICY(),
 )
 
+EVENTS_TABLE_INSERTED_AT_INDEX_SQL = """
+ALTER TABLE {table_name} ON CLUSTER {cluster}
+ADD INDEX `minmax_inserted_at` COALESCE(`inserted_at`, `_timestamp`)
+TYPE minmax
+GRANULARITY 1
+""".format(table_name=EVENTS_DATA_TABLE(), cluster=settings.CLICKHOUSE_CLUSTER)
+
+EVENTS_TABLE_MATERIALIZE_INSERTED_AT_INDEX_SQL = """
+ALTER TABLE {table_name} ON CLUSTER {cluster}
+MATERIALIZE INDEX `minmax_inserted_at`
+""".format(table_name=EVENTS_DATA_TABLE(), cluster=settings.CLICKHOUSE_CLUSTER)
+
 # we add the settings to prevent poison pills from stopping ingestion
 # kafka_skip_broken_messages is an int, not a boolean, so we explicitly set
 # the max block size to consume from kafka such that we skip _all_ broken messages