diff --git a/regression-test/suites/index_p0/test_bitmap_index.groovy b/regression-test/suites/index_p0/test_bitmap_index.groovy
index cf1da844562c25..321c152a11dbed 100644
--- a/regression-test/suites/index_p0/test_bitmap_index.groovy
+++ b/regression-test/suites/index_p0/test_bitmap_index.groovy
@@ -300,7 +300,7 @@ suite("test_bitmap_index") {
                 "replication_allocation" = "tag.location.default: 1",
                 "is_being_synced" = "false",
                 "dynamic_partition.enable" = "true",
-                "dynamic_partition.time_unit" = "DAY",
+                "dynamic_partition.time_unit" = "MONTH",
                 "dynamic_partition.time_zone" = "Asia/Shanghai",
                 "dynamic_partition.start" = "-30",
                 "dynamic_partition.end" = "1",
@@ -398,7 +398,7 @@ suite("test_bitmap_index") {
                 "replication_allocation" = "tag.location.default: 1",
                 "is_being_synced" = "false",
                 "dynamic_partition.enable" = "true",
-                "dynamic_partition.time_unit" = "DAY",
+                "dynamic_partition.time_unit" = "MONTH",
                 "dynamic_partition.time_zone" = "Asia/Shanghai",
                 "dynamic_partition.start" = "-30",
                 "dynamic_partition.end" = "1",