diff --git a/Dockerfile b/Dockerfile
index c37750aa..28f88465 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ LABEL maintainers="Guillaume Scheibel <guillaume.scheibel@gmail.com>, Damien DUP
 LABEL org.opencontainers.image.source="https://github.com/asciidoctor/docker-asciidoctor"
 
 ARG asciidoctor_version=2.0.20
-ARG asciidoctor_pdf_version=2.3.8
+ARG asciidoctor_pdf_version=2.3.9
 
 ENV ASCIIDOCTOR_VERSION=${asciidoctor_version} \
   ASCIIDOCTOR_PDF_VERSION=${asciidoctor_pdf_version}
diff --git a/README.adoc b/README.adoc
index 772e87e4..c6d911ab 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,7 +1,7 @@
 :ALPINE_VERSION: 3.18.2
 :ASCIIDOCTOR_VERSION: 2.0.20
 :ASCIIDOCTOR_CONFLUENCE_VERSION: 0.0.2
-:ASCIIDOCTOR_PDF_VERSION: 2.3.8
+:ASCIIDOCTOR_PDF_VERSION: 2.3.9
 :ASCIIDOCTOR_DIAGRAM_VERSION: 2.2.9
 :ASCIIDOCTOR_EPUB3_VERSION: 1.5.1
 :ASCIIDOCTOR_FB2_VERSION: 0.7.0
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index e6742763..9ab54dd8 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -4,7 +4,7 @@ TMP_GENERATION_DIR="${BATS_TEST_DIRNAME}/tmp"
 ALPINE_VERSION=3.18.2
 ASCIIDOCTOR_VERSION=2.0.20
 ASCIIDOCTOR_CONFLUENCE_VERSION=0.0.2
-ASCIIDOCTOR_PDF_VERSION=2.3.8
+ASCIIDOCTOR_PDF_VERSION=2.3.9
 ASCIIDOCTOR_DIAGRAM_VERSION=2.2.9
 ASCIIDOCTOR_EPUB3_VERSION=1.5.1
 ASCIIDOCTOR_FB2_VERSION=0.7.0