diff --git a/src/Common/Scheduler/Nodes/tests/ResourceTest.h b/src/Common/Scheduler/Nodes/tests/ResourceTest.h
index c787a686a09..a5e6d09aaac 100644
--- a/src/Common/Scheduler/Nodes/tests/ResourceTest.h
+++ b/src/Common/Scheduler/Nodes/tests/ResourceTest.h
@@ -120,6 +120,11 @@ class ResourceTestClass : public ResourceTestBase
     };
 
 public:
+    ~ResourceTestClass()
+    {
+        dequeue(); // Just to avoid any leaks of `Request` object
+    }
+
     template <class TClass>
     void add(const String & path, const String & xml = {})
     {
diff --git a/src/Common/Scheduler/Nodes/tests/gtest_resource_class_fair.cpp b/src/Common/Scheduler/Nodes/tests/gtest_resource_class_fair.cpp
index 16cce309c2a..4f0e8c80734 100644
--- a/src/Common/Scheduler/Nodes/tests/gtest_resource_class_fair.cpp
+++ b/src/Common/Scheduler/Nodes/tests/gtest_resource_class_fair.cpp
@@ -8,9 +8,7 @@ using namespace DB;
 
 using ResourceTest = ResourceTestClass;
 
-/// Tests disabled because of leaks in the test themselves: https://github.com/ClickHouse/ClickHouse/issues/67678
-
-TEST(DISABLED_SchedulerFairPolicy, Factory)
+TEST(SchedulerFairPolicy, Factory)
 {
     ResourceTest t;
 
@@ -19,7 +17,7 @@ TEST(DISABLED_SchedulerFairPolicy, Factory)
     EXPECT_TRUE(dynamic_cast<FairPolicy *>(fair.get()) != nullptr);
 }
 
-TEST(DISABLED_SchedulerFairPolicy, FairnessWeights)
+TEST(SchedulerFairPolicy, FairnessWeights)
 {
     ResourceTest t;
 
@@ -43,7 +41,7 @@ TEST(DISABLED_SchedulerFairPolicy, FairnessWeights)
     t.consumed("B", 20);
 }
 
-TEST(DISABLED_SchedulerFairPolicy, Activation)
+TEST(SchedulerFairPolicy, Activation)
 {
     ResourceTest t;
 
@@ -79,7 +77,7 @@ TEST(DISABLED_SchedulerFairPolicy, Activation)
     t.consumed("B", 10);
 }
 
-TEST(DISABLED_SchedulerFairPolicy, FairnessMaxMin)
+TEST(SchedulerFairPolicy, FairnessMaxMin)
 {
     ResourceTest t;
 
@@ -103,7 +101,7 @@ TEST(DISABLED_SchedulerFairPolicy, FairnessMaxMin)
     t.consumed("A", 20);
 }
 
-TEST(DISABLED_SchedulerFairPolicy, HierarchicalFairness)
+TEST(SchedulerFairPolicy, HierarchicalFairness)
 {
     ResourceTest t;
 
diff --git a/src/Common/Scheduler/Nodes/tests/gtest_resource_class_priority.cpp b/src/Common/Scheduler/Nodes/tests/gtest_resource_class_priority.cpp
index d3d38aae048..a447b7f6780 100644
--- a/src/Common/Scheduler/Nodes/tests/gtest_resource_class_priority.cpp
+++ b/src/Common/Scheduler/Nodes/tests/gtest_resource_class_priority.cpp
@@ -8,9 +8,7 @@ using namespace DB;
 
 using ResourceTest = ResourceTestClass;
 
-/// Tests disabled because of leaks in the test themselves: https://github.com/ClickHouse/ClickHouse/issues/67678
-
-TEST(DISABLED_SchedulerPriorityPolicy, Factory)
+TEST(SchedulerPriorityPolicy, Factory)
 {
     ResourceTest t;
 
@@ -19,7 +17,7 @@ TEST(DISABLED_SchedulerPriorityPolicy, Factory)
     EXPECT_TRUE(dynamic_cast<PriorityPolicy *>(prio.get()) != nullptr);
 }
 
-TEST(DISABLED_SchedulerPriorityPolicy, Priorities)
+TEST(SchedulerPriorityPolicy, Priorities)
 {
     ResourceTest t;
 
@@ -53,7 +51,7 @@ TEST(DISABLED_SchedulerPriorityPolicy, Priorities)
     t.consumed("C", 0);
 }
 
-TEST(DISABLED_SchedulerPriorityPolicy, Activation)
+TEST(SchedulerPriorityPolicy, Activation)
 {
     ResourceTest t;
 
@@ -94,7 +92,7 @@ TEST(DISABLED_SchedulerPriorityPolicy, Activation)
     t.consumed("C", 0);
 }
 
-TEST(DISABLED_SchedulerPriorityPolicy, SinglePriority)
+TEST(SchedulerPriorityPolicy, SinglePriority)
 {
     ResourceTest t;
 
diff --git a/src/Common/Scheduler/Nodes/tests/gtest_throttler_constraint.cpp b/src/Common/Scheduler/Nodes/tests/gtest_throttler_constraint.cpp
index 2bc24cdb292..6cfccb252fa 100644
--- a/src/Common/Scheduler/Nodes/tests/gtest_throttler_constraint.cpp
+++ b/src/Common/Scheduler/Nodes/tests/gtest_throttler_constraint.cpp
@@ -10,9 +10,7 @@ using namespace DB;
 
 using ResourceTest = ResourceTestClass;
 
-/// Tests disabled because of leaks in the test themselves: https://github.com/ClickHouse/ClickHouse/issues/67678
-
-TEST(DISABLED_SchedulerThrottlerConstraint, LeakyBucketConstraint)
+TEST(SchedulerThrottlerConstraint, LeakyBucketConstraint)
 {
     ResourceTest t;
     EventQueue::TimePoint start = std::chrono::system_clock::now();
@@ -42,7 +40,7 @@ TEST(DISABLED_SchedulerThrottlerConstraint, LeakyBucketConstraint)
     t.consumed("A", 10);
 }
 
-TEST(DISABLED_SchedulerThrottlerConstraint, Unlimited)
+TEST(SchedulerThrottlerConstraint, Unlimited)
 {
     ResourceTest t;
     EventQueue::TimePoint start = std::chrono::system_clock::now();
@@ -59,7 +57,7 @@ TEST(DISABLED_SchedulerThrottlerConstraint, Unlimited)
     }
 }
 
-TEST(DISABLED_SchedulerThrottlerConstraint, Pacing)
+TEST(SchedulerThrottlerConstraint, Pacing)
 {
     ResourceTest t;
     EventQueue::TimePoint start = std::chrono::system_clock::now();
@@ -79,7 +77,7 @@ TEST(DISABLED_SchedulerThrottlerConstraint, Pacing)
     }
 }
 
-TEST(DISABLED_SchedulerThrottlerConstraint, BucketFilling)
+TEST(SchedulerThrottlerConstraint, BucketFilling)
 {
     ResourceTest t;
     EventQueue::TimePoint start = std::chrono::system_clock::now();
@@ -113,7 +111,7 @@ TEST(DISABLED_SchedulerThrottlerConstraint, BucketFilling)
     t.consumed("A", 3);
 }
 
-TEST(DISABLED_SchedulerThrottlerConstraint, PeekAndAvgLimits)
+TEST(SchedulerThrottlerConstraint, PeekAndAvgLimits)
 {
     ResourceTest t;
     EventQueue::TimePoint start = std::chrono::system_clock::now();
@@ -141,7 +139,7 @@ TEST(DISABLED_SchedulerThrottlerConstraint, PeekAndAvgLimits)
     }
 }
 
-TEST(DISABLED_SchedulerThrottlerConstraint, ThrottlerAndFairness)
+TEST(SchedulerThrottlerConstraint, ThrottlerAndFairness)
 {
     ResourceTest t;
     EventQueue::TimePoint start = std::chrono::system_clock::now();