diff --git a/vendor/sdl3/sdl3_mutex.odin b/vendor/sdl3/sdl3_mutex.odin
index ada8006bc..8067473f3 100644
--- a/vendor/sdl3/sdl3_mutex.odin
+++ b/vendor/sdl3/sdl3_mutex.odin
@@ -1,8 +1,8 @@
 package sdl3
 
-Mutex  :: struct {}
-RWLock :: struct {}
-
+Mutex     :: struct {}
+RWLock    :: struct {}
+Semaphore :: struct {}
 
 @(default_calling_convention="c", link_prefix="SDL_", require_results)
 foreign lib {
@@ -19,4 +19,12 @@ foreign lib {
 	TryLockRWLockForWriting :: proc(rwlock: ^RWLock) -> bool ---
 	UnlockRWLock            :: proc(rwlock: ^RWLock) ---
 	DestroyRWLock           :: proc(rwlock: ^RWLock) ---
-}
\ No newline at end of file
+
+	CreateSemaphore         :: proc(initial_value: Uint32) -> ^Semaphore ---
+	DestroySemaphore        :: proc(sem: ^Semaphore) ---
+	GetSemaphoreValue       :: proc(sem: ^Semaphore) -> Uint32 ---
+	SignalSemaphore         :: proc(sem: ^Semaphore) ---
+	TryWaitSemaphore        :: proc(sem: ^Semaphore) -> bool ---
+	WaitSemaphore           :: proc(sem: ^Semaphore) ---
+	WaitSemaphoreTimeout    :: proc(sem: ^Semaphore, timeout_ms: Sint32) ---
+}