diff --git a/doc/specs/vulkan/Makefile b/doc/specs/vulkan/Makefile
index dc6ab8d6..01a9eef3 100644
--- a/doc/specs/vulkan/Makefile
+++ b/doc/specs/vulkan/Makefile
@@ -87,7 +87,7 @@ VERBOSE =
 #	     $(EXTENSIONS))
 # ADOCOPTS   options for asciidoc->HTML5 output
 NOTEOPTS     = -a editing-notes -a implementation-guide
-SPECREVISION = 1.0.49
+SPECREVISION = 1.0.50
 # Spell out RFC2822 format as not all date commands support -R
 SPECDATE     = $(shell echo `date -u "+%a, %d %b %Y %T %z"`)