diff --git a/include/shared_mutex b/include/shared_mutex
index 7661054..00f816d 100644
--- a/include/shared_mutex
+++ b/include/shared_mutex
@@ -232,7 +232,7 @@
 
 public:
     _LIBCPP_INLINE_VISIBILITY
-    shared_lock() noexcept
+    shared_lock() _NOEXCEPT
         : __m_(nullptr),
           __owns_(false)
         {}
@@ -244,7 +244,7 @@
         {__m_->lock_shared();}
 
     _LIBCPP_INLINE_VISIBILITY
-    shared_lock(mutex_type& __m, defer_lock_t) noexcept
+    shared_lock(mutex_type& __m, defer_lock_t) _NOEXCEPT
         : __m_(&__m),
           __owns_(false)
         {}
@@ -288,7 +288,7 @@
     shared_lock& operator=(shared_lock const&) = delete;
 
     _LIBCPP_INLINE_VISIBILITY
-    shared_lock(shared_lock&& __u) noexcept
+    shared_lock(shared_lock&& __u) _NOEXCEPT
         : __m_(__u.__m_),
           __owns_(__u.__owns_)
         {
@@ -297,7 +297,7 @@
         }
 
     _LIBCPP_INLINE_VISIBILITY
-    shared_lock& operator=(shared_lock&& __u) noexcept
+    shared_lock& operator=(shared_lock&& __u) _NOEXCEPT
     {
         if (__owns_)
             __m_->unlock_shared();
@@ -320,14 +320,14 @@
 
     // Setters
     _LIBCPP_INLINE_VISIBILITY
-    void swap(shared_lock& __u) noexcept
+    void swap(shared_lock& __u) _NOEXCEPT
     {
         _VSTD::swap(__m_, __u.__m_);
         _VSTD::swap(__owns_, __u.__owns_);
     }
 
     _LIBCPP_INLINE_VISIBILITY
-    mutex_type* release() noexcept
+    mutex_type* release() _NOEXCEPT
     {
         mutex_type* __m = __m_;
         __m_ = nullptr;
@@ -337,13 +337,13 @@
 
     // Getters
     _LIBCPP_INLINE_VISIBILITY
-    bool owns_lock() const noexcept {return __owns_;}
+    bool owns_lock() const _NOEXCEPT {return __owns_;}
 
     _LIBCPP_INLINE_VISIBILITY
-    explicit operator bool () const noexcept {return __owns_;}
+    explicit operator bool () const _NOEXCEPT {return __owns_;}
 
     _LIBCPP_INLINE_VISIBILITY
-    mutex_type* mutex() const noexcept {return __m_;}
+    mutex_type* mutex() const _NOEXCEPT {return __m_;}
 };
 
 template <class _Mutex>
@@ -409,7 +409,7 @@
 template <class _Mutex>
 inline _LIBCPP_INLINE_VISIBILITY
 void
-swap(shared_lock<_Mutex>& __x, shared_lock<_Mutex>& __y) noexcept
+swap(shared_lock<_Mutex>& __x, shared_lock<_Mutex>& __y) _NOEXCEPT
     {__x.swap(__y);}
 
 _LIBCPP_END_NAMESPACE_STD