diff --git a/CHANGELOG.md b/CHANGELOG.md
index b8da049b..89c2e7fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,26 @@ Acronyms:
 
 **Bolded text highlights its importance.**
 
+## [3.2.1] - 2022-12-19
+
+[f477e2d](https://github.com/BITNP/BIThesis/commit/f477e2db879ca5722c18397bac74d2e146ed2074)...[34c0bfd](https://github.com/BITNP/BIThesis/commit/34c0bfd36fcb3bda7aee75c5c4dc72360ef6cb89)
+
+### Miscellaneous Tasks
+
+- Bump version. ([1ee30ac](https://github.com/BITNP/BIThesis/commit/1ee30ac126cfafc11c97d8674ddf4ebbbdb3df6b))
+
+## [3.2.1-alpha-1] - 2022-12-15
+
+[ffc4185](https://github.com/BITNP/BIThesis/commit/ffc4185792250e47d0986f727f1529da4d05e5e1)...[f477e2d](https://github.com/BITNP/BIThesis/commit/f477e2db879ca5722c18397bac74d2e146ed2074)
+
+### Bug Fixes
+
+- Add pdf bookmarks for \chapter* ([f477e2d](https://github.com/BITNP/BIThesis/commit/f477e2db879ca5722c18397bac74d2e146ed2074))
+
+### Build
+
+- Improve Overleaf pack logic. ([420a841](https://github.com/BITNP/BIThesis/commit/420a841c5758450535887c7f47427aaae7cfdc68))
+
 ## [3.2.0] - 2022-12-03
 
 [711c9c0](https://github.com/BITNP/BIThesis/commit/711c9c047becbaaeb29c76eb2cbc91641598403d)...[d6e4038](https://github.com/BITNP/BIThesis/commit/d6e403871e205aa08c220389e57d7578596f747b)
diff --git a/bithesis.dtx b/bithesis.dtx
index f34e8fa9..2bcc47bb 100644
--- a/bithesis.dtx
+++ b/bithesis.dtx
@@ -21,7 +21,7 @@
 %<thesis>\ProvidesExplClass{bithesis}
 %<report>\ProvidesExplClass{bitreport}
 %<beamer>\ProvidesExplClass{bitbeamer}
-%<cls>{2022-12-02}{3.2.0}{BIT Thesis Templates}
+%<cls>{2022-12-17}{3.2.1}{BIT Thesis Templates}
 %
 %<oldcls>\NeedsTeXFormat{LaTeX2e}[2020/10/01]
 %<book>\ProvidesClass{bitbook}
@@ -30,7 +30,7 @@
 %<oldcls> [2022/05/09 v2.1.1 BIT Thesis Templates]
 %
 %<*driver>
-\ProvidesFile{bithesis.dtx}[2022/12/02 3.2.0 BIT Thesis Templates]
+\ProvidesFile{bithesis.dtx}[2022/12/17 3.2.1 BIT Thesis Templates]
 \documentclass[letterpaper]{l3doc}
 \usepackage{dtx-style}
 
diff --git a/templates/graduate-thesis/bithesis.cls b/templates/graduate-thesis/bithesis.cls
index 4306607e..a362550d 100644
--- a/templates/graduate-thesis/bithesis.cls
+++ b/templates/graduate-thesis/bithesis.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bithesis}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \int_new:N \g__bithesis_thesis_type_int
 \int_new:N \g__bithesis_head_zihao_int
 \bool_new:N \g__bithesis_twoside_bool
diff --git a/templates/lab-report/bitreport.cls b/templates/lab-report/bitreport.cls
index b17f0967..be8bf417 100644
--- a/templates/lab-report/bitreport.cls
+++ b/templates/lab-report/bitreport.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bitreport}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \int_new:N \g__bithesis_report_type_int
 \clist_const:Nn \c__bithesis_report_type_clist
     { common, undergraduate_proposal}
diff --git a/templates/paper-translation/bithesis.cls b/templates/paper-translation/bithesis.cls
index 4306607e..a362550d 100644
--- a/templates/paper-translation/bithesis.cls
+++ b/templates/paper-translation/bithesis.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bithesis}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \int_new:N \g__bithesis_thesis_type_int
 \int_new:N \g__bithesis_head_zihao_int
 \bool_new:N \g__bithesis_twoside_bool
diff --git a/templates/presentation-slide/bitbeamer.cls b/templates/presentation-slide/bitbeamer.cls
index 72edc243..92b1b658 100644
--- a/templates/presentation-slide/bitbeamer.cls
+++ b/templates/presentation-slide/bitbeamer.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bitbeamer}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \keys_define:nn { bitbeamer }
   {
     titlegraphic .tl_set:N = \l_bit_titlegraphic_tl,
diff --git a/templates/undergraduate-proposal-report/bitreport.cls b/templates/undergraduate-proposal-report/bitreport.cls
index b17f0967..be8bf417 100644
--- a/templates/undergraduate-proposal-report/bitreport.cls
+++ b/templates/undergraduate-proposal-report/bitreport.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bitreport}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \int_new:N \g__bithesis_report_type_int
 \clist_const:Nn \c__bithesis_report_type_clist
     { common, undergraduate_proposal}
diff --git a/templates/undergraduate-thesis-en/bithesis.cls b/templates/undergraduate-thesis-en/bithesis.cls
index 4306607e..a362550d 100644
--- a/templates/undergraduate-thesis-en/bithesis.cls
+++ b/templates/undergraduate-thesis-en/bithesis.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bithesis}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \int_new:N \g__bithesis_thesis_type_int
 \int_new:N \g__bithesis_head_zihao_int
 \bool_new:N \g__bithesis_twoside_bool
diff --git a/templates/undergraduate-thesis/bithesis.cls b/templates/undergraduate-thesis/bithesis.cls
index 4306607e..a362550d 100644
--- a/templates/undergraduate-thesis/bithesis.cls
+++ b/templates/undergraduate-thesis/bithesis.cls
@@ -27,7 +27,7 @@
 %% 
 \RequirePackage{expl3,l3keys2e}
 \ProvidesExplClass{bithesis}
-{2022-12-02}{3.2.0}{BIT Thesis Templates}
+{2022-12-17}{3.2.1}{BIT Thesis Templates}
 \int_new:N \g__bithesis_thesis_type_int
 \int_new:N \g__bithesis_head_zihao_int
 \bool_new:N \g__bithesis_twoside_bool