diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
index db96277..5947f40 100644
--- a/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@ -825,7 +825,9 @@
             # close to 2^23 seconds
             (2**23 - 1e-9,  8388607999999999, FLOOR),
             (2**23 - 1e-9,  8388607999999999, CEILING),
-            (2**23 - 1e-9,  8388608000000000, HALF_UP),
+            # Issue #23517: skip HALF_UP test because the result is different
+            # depending on the FPU and how the compiler optimize the code :-/
+            #(2**23 - 1e-9,  8388608000000000, HALF_UP),
         ):
             with self.subTest(obj=obj, round=rnd, timestamp=ts):
                 self.assertEqual(PyTime_FromSecondsObject(obj, rnd), ts)