Fix trait bounds

2 files changed, 10 insertions, 2 deletions

diff --git a/src/mutex/guard.rs b/src/mutex/guard.rs
index 9a309b4..5a2a2c1 100644
--- a/src/mutex/guard.rs
+++ b/src/mutex/guard.rs
@@ -61,7 +61,15 @@ impl<'a, 'key: 'a, T: ?Sized + 'a, Key: Keyable, R: RawMutex> MutexGuard<'a, 'ke
 		Self {
 			mutex: MutexRef(mutex),
 			thread_key,
-			_phantom: PhantomData,
+			_phantom1: PhantomData,
+			_phantom2: PhantomData,
 		}
 	}
 }
+
+unsafe impl<'a, T: ?Sized + 'a, R: RawMutex> Sync for MutexRef<'a, T, R> {}
+
+unsafe impl<'a, 'key: 'a, T: ?Sized + Sync, Key: Keyable + 'key, R: RawMutex> Sync
+	for MutexGuard<'_, 'key, T, Key, R>
+{
+}
diff --git a/src/mutex/mutex.rs b/src/mutex/mutex.rs
index 83600b9..1976e57 100644
--- a/src/mutex/mutex.rs
+++ b/src/mutex/mutex.rs
@@ -227,4 +227,4 @@ impl<T: ?Sized, R: RawMutex> Mutex<T, R> {
 }
 
 unsafe impl<R: RawMutex + Send, T: ?Sized + Send> Send for Mutex<T, R> {}
-unsafe impl<R: RawMutex + Sync, T: ?Sized + Send + Sync> Sync for Mutex<T, R> {}
+unsafe impl<R: RawMutex + Sync, T: ?Sized + Send> Sync for Mutex<T, R> {}