diff --git a/llvm/docs/AMDGPUUsage.rst b/llvm/docs/AMDGPUUsage.rst
index 036b4461ec06..1ede5ca2d4cf 100644
--- a/llvm/docs/AMDGPUUsage.rst
+++ b/llvm/docs/AMDGPUUsage.rst
@@ -910,6 +910,8 @@ supported for the ``amdgcn`` target.
      *reserved for future use*             10
      *reserved for future use*             11
      *reserved for downstream use (LLPC)*  12
+     *reserved for future use*             13
+     *reserved for future use*             14
      Streamout Registers                   128             N/A         GS_REGS
      ===================================== =============== =========== ================ ======= ============================