diff --git a/MLeaksFinder/UINavigationController+MemoryLeak.m b/MLeaksFinder/UINavigationController+MemoryLeak.m
index 94e2add..099f1f1 100644
--- a/MLeaksFinder/UINavigationController+MemoryLeak.m
+++ b/MLeaksFinder/UINavigationController+MemoryLeak.m
@@ -23,6 +23,7 @@ + (void)load {
         [self swizzleSEL:@selector(popViewControllerAnimated:) withSEL:@selector(swizzled_popViewControllerAnimated:)];
         [self swizzleSEL:@selector(popToViewController:animated:) withSEL:@selector(swizzled_popToViewController:animated:)];
         [self swizzleSEL:@selector(popToRootViewControllerAnimated:) withSEL:@selector(swizzled_popToRootViewControllerAnimated:)];
+        [self swizzleSEL:@selector(setViewControllers:animated:) withSEL:@selector(swizzled_setViewControllers:animated:)];
     });
 }
 
@@ -80,6 +81,18 @@ - (UIViewController *)swizzled_popViewControllerAnimated:(BOOL)animated {
     return poppedViewControllers;
 }
 
+- (void)swizzled_setViewControllers:(NSArray<UIViewController *> *)viewControllers animated:(BOOL)animated {
+    NSArray *prev = [self.viewControllers copy];
+    [self swizzled_setViewControllers:viewControllers animated:animated];
+    
+    NSSet *set = [NSSet setWithArray:viewControllers];
+    for (UIViewController *v in prev) {
+        if (![set containsObject:v]) {
+            [v willDealloc];
+        }
+    }
+}
+
 - (BOOL)willDealloc {
     if (![super willDealloc]) {
         return NO;
diff --git a/MLeaksFinder/UIViewController+MemoryLeak.m b/MLeaksFinder/UIViewController+MemoryLeak.m
index f7dee54..e1e05dc 100644
--- a/MLeaksFinder/UIViewController+MemoryLeak.m
+++ b/MLeaksFinder/UIViewController+MemoryLeak.m
@@ -49,7 +49,12 @@ - (void)swizzled_dismissViewControllerAnimated:(BOOL)flag completion:(void (^)(v
     
     if (!dismissedViewController) return;
     
-    [dismissedViewController willDealloc];
+    // present出来的VC, dismiss的时候, 系统会多持有几秒? 为了避免频繁的误报, 给他多一点时间dealloc
+    __weak id weakVC = dismissedViewController;
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+        __strong id strongVC = weakVC;
+        [strongVC willDealloc];
+    });
 }
 
 - (BOOL)willDealloc {