diff --git a/Dockerfile b/Dockerfile
index 5ee28ea2..55285849 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM alpine:${alpine_version} AS base
 
 ARG asciidoctor_version=2.0.17
 ARG asciidoctor_confluence_version=0.0.2
-ARG asciidoctor_pdf_version=1.6.2
+ARG asciidoctor_pdf_version=2.0.6
 ARG asciidoctor_diagram_version=2.2.1
 ARG asciidoctor_epub3_version=1.5.1
 ARG asciidoctor_fb2_version=0.5.1
diff --git a/README.adoc b/README.adoc
index 27e8079d..0f440867 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,7 +1,7 @@
 :ALPINE_VERSION: 3.15.4
 :ASCIIDOCTOR_VERSION: 2.0.17
 :ASCIIDOCTOR_CONFLUENCE_VERSION: 0.0.2
-:ASCIIDOCTOR_PDF_VERSION: 1.6.2
+:ASCIIDOCTOR_PDF_VERSION: 2.0.6
 :ASCIIDOCTOR_DIAGRAM_VERSION: 2.2.1
 :ASCIIDOCTOR_EPUB3_VERSION: 1.5.1
 :ASCIIDOCTOR_FB2_VERSION: 0.5.1
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index 4eea4935..002d680f 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -4,7 +4,7 @@ TMP_GENERATION_DIR="${BATS_TEST_DIRNAME}/tmp"
 ALPINE_VERSION=3.15.4
 ASCIIDOCTOR_VERSION=2.0.17
 ASCIIDOCTOR_CONFLUENCE_VERSION=0.0.2
-ASCIIDOCTOR_PDF_VERSION=1.6.2
+ASCIIDOCTOR_PDF_VERSION=2.0.6
 ASCIIDOCTOR_DIAGRAM_VERSION=2.2.1
 ASCIIDOCTOR_EPUB3_VERSION=1.5.1
 ASCIIDOCTOR_FB2_VERSION=0.5.1