diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2e6404c..c9f04681 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+## [v3.3.0] - 2021-03-18
+
 ### Added
 
 - 添加软件工程专业的封面的格式的支持。
@@ -229,7 +231,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - 优化图注、算法的行距。
 - 二级以下节标题编号下采用“1.”、“(1)”、“①”。
 
-[Unreleased]: https://github.com/ustctug/ustcthesis/compare/v3.2.1...HEAD
+[Unreleased]: https://github.com/ustctug/ustcthesis/compare/v3.3.0...HEAD
+[v3.3.0]: https://github.com/ustctug/ustcthesis/compare/v3.2.1...v3.3.0
 [v3.2.1]: https://github.com/ustctug/ustcthesis/compare/v3.2...v3.2.1
 [3.1.06]: https://github.com/ustctug/ustcthesis/compare/v3.2...v3.1.06
 [3.1.06]: https://github.com/ustctug/ustcthesis/compare/v3.1.05...v3.1.06
diff --git a/Makefile b/Makefile
index 586905fb..e34f1ff0 100644
--- a/Makefile
+++ b/Makefile
@@ -5,8 +5,8 @@ BSTFILES = $(NAME)-numerical.bst $(NAME)-authoryear.bst $(NAME)-bachelor.bst
 
 SHELL = bash
 LATEXMK = latexmk -xelatex
-VERSION = $(shell cat $(NAME).cls | egrep -o "\[\d\d\d\d/\d\d\/\d\d v.+\]" \
-	  | egrep -o "v\S+")
+VERSION = $(shell cat $(NAME).cls | egrep -o "\\ustcthesisversion{v[0-9.]+" \
+	  | egrep -o "v[0-9.]+")
 TEXMF = $(shell kpsewhich --var-value TEXMFHOME)
 
 .PHONY : main cls doc test save clean all install distclean zip FORCE_MAKE
@@ -47,7 +47,7 @@ install : cls doc
 zip : main doc
 	ln -sf . $(NAME)
 	zip -r ../$(NAME)-$(VERSION).zip $(NAME)/{*.md,LICENSE,\
-	$(NAME)-doc.tex,$(NAME)-doc.pdf,$(NAME).cls,*.bst,figures,\
+	$(NAME)-doc.tex,$(NAME)-doc.pdf,$(NAME).cls,*.bst,*.bbx,*.cbx,figures,\
 	$(MAIN).tex,ustcsetup.tex,chapters,bib,$(MAIN).pdf,\
 	latexmkrc,Makefile}
 	rm $(NAME)
diff --git a/build.lua b/build.lua
index 45f0442e..f673a34c 100644
--- a/build.lua
+++ b/build.lua
@@ -31,9 +31,14 @@ function update_tag(file, content, tagname, tagdate)
   local url = "https://github.com/ustctug/ustcthesis"
   local date = string.gsub(tagdate, "%-", "/")
   if string.match(file, "%.cls$") then
+    if string.match(content, "\\newcommand\\ustcthesisversion{v[0-9.]+}") then
+      content = string.gsub(content, "\\newcommand\\ustcthesisversion{v[0-9.]+",
+      "\\newcommand\\ustcthesisversion{" .. tagname)
+    end
+
     if string.match(content, "\\ProvidesClass{ustcthesis}%[%d%d%d%d/%d%d/%d%d v[0-9.]+") then
-      content = string.gsub(content, "%d%d%d%d/%d%d/%d%d v[0-9.]+",
-        date .. " " .. tagname)
+      content = string.gsub(content, "%d%d%d%d/%d%d/%d%d",
+        date)
     end
 
   elseif string.match(file, "%-doc.tex") then
diff --git a/ustcsetup.tex b/ustcsetup.tex
index 0a760791..4256751c 100644
--- a/ustcsetup.tex
+++ b/ustcsetup.tex
@@ -1,9 +1,9 @@
 % !TeX root = ./main.tex
 
 \ustcsetup{
-  title              = {中国科学技术大学\\学位论文模板示例文档},
+  title              = {中国科学技术大学\\学位论文模板示例文档 \ustcthesisversion},
   title*             = {An example of thesis template for University of Science
-                        and Technology of China},
+                        and Technology of China \ustcthesisversion},
   author             = {李泽平},
   author*            = {Li Zeping},
   speciality         = {数学与应用数学},
diff --git a/ustcthesis-doc.tex b/ustcthesis-doc.tex
index 665a4b26..a6e55ee9 100644
--- a/ustcthesis-doc.tex
+++ b/ustcthesis-doc.tex
@@ -113,7 +113,7 @@
 \title{\cls{ustcthesis} 使用说明}
 \author{Zeping Lee\thanks{zepinglee AT gmail.com} \and
         seisman\thanks{seisman.info AT gmail.com} }
-\date{v3.2.1\qquad 2020-04-03}
+\date{v3.3.0\qquad 2021-03-18}
 \maketitle
 
 
diff --git a/ustcthesis.cls b/ustcthesis.cls
index 3246d445..7b997206 100644
--- a/ustcthesis.cls
+++ b/ustcthesis.cls
@@ -11,7 +11,8 @@
 %
 
 \NeedsTeXFormat{LaTeX2e}[2017/04/15]
-\ProvidesClass{ustcthesis}[2020/04/03 v3.2.1 USTC thesis template]
+\newcommand\ustcthesisversion{v3.3.0}
+\ProvidesClass{ustcthesis}[2020/04/03 {\ustcthesisversion} USTC thesis template]
 
 % 报错和警告
 \newcommand\ustc@error[1]{%