diff --git a/DESCRIPTION b/DESCRIPTION
index a74e6990..3c6aae18 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: bookdown
 Type: Package
 Title: Authoring Books and Technical Documents with R Markdown
-Version: 0.33.2
+Version: 0.33.3
 Authors@R: c(
     person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666")),
     person("Christophe", "Dervieux", , "cderv@posit.co", role = c("ctb"),
diff --git a/NEWS.md b/NEWS.md
index 37486e82..c8d99cd1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,6 @@
 # CHANGES IN bookdown VERSION 0.34
 
+- Fix an issue with CSL using hanging indent style in `gitbook()` (thanks, @pablobernabeu, #1422).
 
 # CHANGES IN bookdown VERSION 0.33
 
diff --git a/inst/templates/gitbook.html b/inst/templates/gitbook.html
index fb35108a..2f6d3581 100644
--- a/inst/templates/gitbook.html
+++ b/inst/templates/gitbook.html
@@ -76,6 +76,10 @@
 </style>
 $endif$
 
+<style type="text/css">
+  $-- Taken From Pandoc 'styles.html'
+  div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
+</style>
 $if(csl-css)$
 <style type="text/css">
 /* Used with Pandoc 2.11+ new --citeproc when CSL is used */