diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 8ad9c2f29f8..6aae4b6e730 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,9 @@
 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
 
+	* include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
+	as 201611L, because P0497R0 changes are supported.
+	* include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
+
 	* include/bits/erase_if.h [__cplusplus > 201703L]
 	(__cpp_lib_erase_if): Only define for C++2a.
 	* include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
diff --git a/libstdc++-v3/include/bits/shared_ptr_base.h b/libstdc++-v3/include/bits/shared_ptr_base.h
index cacc7d689ea..b45cbf73667 100644
--- a/libstdc++-v3/include/bits/shared_ptr_base.h
+++ b/libstdc++-v3/include/bits/shared_ptr_base.h
@@ -890,7 +890,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	  _M_pi = nullptr;
     }
 
-#define __cpp_lib_shared_ptr_arrays 201603
+#define __cpp_lib_shared_ptr_arrays 201611L
 
   // Helper traits for shared_ptr of array:
 
diff --git a/libstdc++-v3/include/std/version b/libstdc++-v3/include/std/version
index 36d291dcf93..38277b9ecf2 100644
--- a/libstdc++-v3/include/std/version
+++ b/libstdc++-v3/include/std/version
@@ -52,7 +52,7 @@
 #define __cpp_lib_allocator_traits_is_always_equal 201411
 #define __cpp_lib_is_null_pointer 201309
 #define __cpp_lib_result_of_sfinae 201210
-#define __cpp_lib_shared_ptr_arrays 201603
+#define __cpp_lib_shared_ptr_arrays 201611L
 
 #if !defined(__STRICT_ANSI__)
 // gnu++11