diff --git a/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp b/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
index 946e742..511caf1 100644
--- a/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
+++ b/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
@@ -8,6 +8,7 @@
 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
 // UNSUPPORTED: clang-5, clang-6, clang-7
 // UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8, apple-clang-9
+// UNSUPPORTED: apple-clang-10.0.0
 
 // <chrono>
 // class day;
diff --git a/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp b/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
index abc3dcd..282110f 100644
--- a/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
+++ b/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
@@ -8,6 +8,7 @@
 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
 // UNSUPPORTED: clang-5, clang-6, clang-7
 // UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8, apple-clang-9
+// UNSUPPORTED: apple-clang-10.0.0
 
 // <chrono>
 // class year;