diff --git a/db_stress_tool/db_stress_test_base.cc b/db_stress_tool/db_stress_test_base.cc
index 57ca7e2e2..60beaea95 100644
--- a/db_stress_tool/db_stress_test_base.cc
+++ b/db_stress_tool/db_stress_test_base.cc
@@ -193,7 +193,8 @@ bool StressTest::BuildOptionsTable() {
       {"memtable_huge_page_size", {"0", std::to_string(2 * 1024 * 1024)}},
       {"max_successive_merges", {"0", "2", "4"}},
       {"inplace_update_num_locks", {"100", "200", "300"}},
-      {"experimental_mempurge_threshold", {"0.0", "1.0"}},
+      // TODO: re-enable once internal task T124324915 is fixed.
+      // {"experimental_mempurge_threshold", {"0.0", "1.0"}},
       // TODO(ljin): enable test for this option
       // {"disable_auto_compactions", {"100", "200", "300"}},
       {"level0_file_num_compaction_trigger",
diff --git a/tools/db_crashtest.py b/tools/db_crashtest.py
index 8dbf13dac..9e62793c6 100644
--- a/tools/db_crashtest.py
+++ b/tools/db_crashtest.py
@@ -275,7 +275,8 @@ whitebox_default_params = {
 simple_default_params = {
     "allow_concurrent_memtable_write": lambda: random.randint(0, 1),
     "column_families": 1,
-    "experimental_mempurge_threshold": lambda: 10.0*random.random(),
+    # TODO: re-enable once internal task T124324915 is fixed.
+    # "experimental_mempurge_threshold": lambda: 10.0*random.random(),
     "max_background_compactions": 1,
     "max_bytes_for_level_base": 67108864,
     "memtablerep": "skip_list",