diff --git a/src/llfs/lru_clock.test.cpp b/src/llfs/lru_clock.test.cpp
index 7d8c123..f0f8e9e 100644
--- a/src/llfs/lru_clock.test.cpp
+++ b/src/llfs/lru_clock.test.cpp
@@ -94,7 +94,7 @@ void run_sync_update_test(const usize kNumFastThreads)
   std::thread slow_thread{[&slow_thread_values] {
     for (usize i = 0; i < kSlowThreadReads; ++i) {
       std::this_thread::sleep_for(
-          std::chrono::microseconds(llfs::LRUClock::kMaxSyncDelayUsec * 10));
+          std::chrono::microseconds(llfs::LRUClock::kMaxSyncDelayUsec * 40));
       slow_thread_values[i] = llfs::LRUClock::read_local();
     }
   }};
@@ -144,7 +144,7 @@ void run_sync_update_test(const usize kNumFastThreads)
         << BATT_INSPECT(max_count) << BATT_INSPECT_RANGE(slow_thread_values);
   }
 
-  EXPECT_GT(slow_thread_values.back(), kUpdatesPerThread / 2);
+  EXPECT_GT(slow_thread_values.back(), kUpdatesPerThread / 10);
 }
 
 TEST(LruClockTest, SyncUpdate1)