diff --git a/src/gfxstream/codegen/scripts/cereal/decoder.py b/src/gfxstream/codegen/scripts/cereal/decoder.py
index 525501fb82c..1dbb1ec698d 100644
--- a/src/gfxstream/codegen/scripts/cereal/decoder.py
+++ b/src/gfxstream/codegen/scripts/cereal/decoder.py
@@ -744,11 +744,15 @@ custom_decodes = {
     "vkAcquireImageANDROID" : emit_global_state_wrapped_decoding,
     "vkQueueSignalReleaseImageANDROID" : emit_global_state_wrapped_decoding,
 
+    # Semaphores
     "vkCreateSemaphore" : emit_global_state_wrapped_decoding,
     "vkGetSemaphoreFdKHR" : emit_global_state_wrapped_decoding,
     "vkImportSemaphoreFdKHR" : emit_global_state_wrapped_decoding,
     "vkDestroySemaphore" : emit_global_state_wrapped_decoding,
+    "vkSignalSemaphore" : emit_global_state_wrapped_decoding,
+    "vkWaitSemaphores" : emit_global_state_wrapped_decoding,
 
+    # Fences
     "vkCreateFence" : emit_global_state_wrapped_decoding,
     "vkGetFenceStatus" : emit_global_state_wrapped_decoding,
     "vkWaitForFences" : emit_global_state_wrapped_decoding,