diff --git a/Makefile b/Makefile
index 21641dd..0c7f234 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ DOCS := \
 	riscv-cove-io.adoc
 
 DATE ?= $(shell date +%Y-%m-%d)
-VERSION ?= v0.0.0
+VERSION ?= v0.2.0
 REVMARK ?= Draft
 ifneq ($(SKIP_DOCKER),true)
 	DOCKER_CMD := docker run --rm -v ${PWD}:/build -w /build \
@@ -49,7 +49,8 @@ OPTIONS := --trace \
 REQUIRES := --require=asciidoctor-bibtex \
             --require=asciidoctor-diagram \
             --require=asciidoctor-mathematical \
-            --require=asciidoctor-kroki
+            --require=asciidoctor-kroki \
+            --require=./src/preprocessor.rb
 
 .PHONY: all build clean build-container build-no-container build-docs
 
diff --git a/src/00-header.adoc b/src/00-header.adoc
index 2c4307c..e418e5b 100644
--- a/src/00-header.adoc
+++ b/src/00-header.adoc
@@ -2,7 +2,7 @@
 :description: RISC-V CoVE IO: Trusted IO proposal for RISC-V
 :company: RISC-V.org
 :revdate: 2023/04
-:revnumber: 0.1
+:revnumber: 0.2.0
 :revremark: This document is in development. Assume everything can change. See http://riscv.org/spec-state for details.
 :url-riscv: http://riscv.org
 :doctype: book
@@ -35,6 +35,7 @@ endif::[]
 :stem: latexmath
 :footnote:
 :xrefstyle: short
+:kroki-default-format: png
 
 = Confidential VM Extension I/O (CoVE-IO) for Confidential Computing on RISC-V platforms
 Editor - Samuel Ortiz; Jiewen Yao, RISC-V AP-TEE-IO Task Group