diff --git a/include/spirv/unified1/spirv.core.grammar.json b/include/spirv/unified1/spirv.core.grammar.json
index 5fc015e..c91540d 100644
--- a/include/spirv/unified1/spirv.core.grammar.json
+++ b/include/spirv/unified1/spirv.core.grammar.json
@@ -9805,7 +9805,7 @@
         {
           "enumerant" : "PrimitiveId",
           "value" : 7,
-          "capabilities" : [ "Geometry", "Tessellation", "RayTracingNV", "RayTracingKHR" ]
+          "capabilities" : [ "Geometry", "Tessellation", "RayTracingNV", "RayTracingKHR", "MeshShadingNV" ]
         },
         {
           "enumerant" : "InvocationId",
@@ -9815,12 +9815,12 @@
         {
           "enumerant" : "Layer",
           "value" : 9,
-          "capabilities" : [ "Geometry", "ShaderLayer", "ShaderViewportIndexLayerEXT" ]
+          "capabilities" : [ "Geometry", "ShaderLayer", "ShaderViewportIndexLayerEXT", "MeshShadingNV" ]
         },
         {
           "enumerant" : "ViewportIndex",
           "value" : 10,
-          "capabilities" : [ "MultiViewport", "ShaderViewportIndex", "ShaderViewportIndexLayerEXT" ]
+          "capabilities" : [ "MultiViewport", "ShaderViewportIndex", "ShaderViewportIndexLayerEXT", "MeshShadingNV" ]
         },
         {
           "enumerant" : "TessLevelOuter",