diff --git a/devel/211_1.md b/devel/211_1.md
index de4073962ae878f118337a41545b67f018a98e41..d590fe3467e7e5c49431cfdfba12fd9b349581b7 100644
--- a/devel/211_1.md
+++ b/devel/211_1.md
@@ -12,6 +12,7 @@ bin/goldfish tools/lint.scm goldfish/liii/timeit.scm tests/goldfish/liii/timeit-
 bin/goldfish tests/goldfish/liii/timeit-test.scm
 ```
 
+## 2025/11/04 移除时间的上界，系统会抖动
 ## 2025/11/04 移除sleep 0.001的单元测试
 ### Why
 在windows上运行10次`sleep 0.001`，实际上会超过 0.05。
diff --git a/tests/goldfish/liii/timeit-test.scm b/tests/goldfish/liii/timeit-test.scm
index fe205709475781a811bd1a21f814ff879606bd65..3e56ecacb56e6c70b29b94fc0514bdb222ead5dc 100644
--- a/tests/goldfish/liii/timeit-test.scm
+++ b/tests/goldfish/liii/timeit-test.scm
@@ -133,16 +133,14 @@ type-error
                       (lambda () #t)
                       1)))
   (check (number? result) => #t)
-  (check (>= result 0.09) => #t)  ; Should be at least 0.09 seconds
-  (check (<= result 0.2) => #t))  ; Should be less than 0.2 seconds
+  (check (>= result 0.09) => #t))  ; Should be at least 0.09 seconds
 
 ; Test timeit with multiple sleep iterations
 (let ((result (timeit (lambda () (sleep 0.01))
                       (lambda () #t)
                       5)))
   (check (number? result) => #t)
-  (check (>= result 0.04) => #t)  ; Should be at least 0.04 seconds (5 * 0.01)
-  (check (<= result 0.1) => #t))  ; Should be less than 0.1 seconds
+  (check (>= result 0.04) => #t))  ; Should be at least 0.04 seconds (5 * 0.01)
 
 ; Test timeit with very short sleep
 (let ((result (timeit (lambda () (sleep 0.001))