diff --git a/Dockerfile b/Dockerfile
index c9ac86c..259d7f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -86,7 +86,7 @@ RUN apk add --no-cache \
 
 ARG asciidoctor_confluence_version=0.0.2
 ARG asciidoctor_diagram_version=2.2.17
-ARG asciidoctor_epub3_version=2.0.1
+ARG asciidoctor_epub3_version=2.1.0
 ARG asciidoctor_fb2_version=0.7.0
 ARG asciidoctor_mathematical_version=0.3.5
 ARG asciidoctor_revealjs_version=5.1.0
diff --git a/README.adoc b/README.adoc
index 24112b8..5eb6589 100644
--- a/README.adoc
+++ b/README.adoc
@@ -3,7 +3,7 @@
 :ASCIIDOCTOR_CONFLUENCE_VERSION: 0.0.2
 :ASCIIDOCTOR_PDF_VERSION: 2.3.12
 :ASCIIDOCTOR_DIAGRAM_VERSION: 2.2.17
-:ASCIIDOCTOR_EPUB3_VERSION: 2.0.1
+:ASCIIDOCTOR_EPUB3_VERSION: 2.1.0
 :ASCIIDOCTOR_FB2_VERSION: 0.7.0
 :ASCIIDOCTOR_MATHEMATICAL_VERSION: 0.3.5
 :ASCIIDOCTOR_REVEALJS_VERSION: 5.1.0
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index ea1a843..3ccdfe1 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -6,7 +6,7 @@ ASCIIDOCTOR_VERSION=2.0.20
 ASCIIDOCTOR_CONFLUENCE_VERSION=0.0.2
 ASCIIDOCTOR_PDF_VERSION=2.3.12
 ASCIIDOCTOR_DIAGRAM_VERSION=2.2.17
-ASCIIDOCTOR_EPUB3_VERSION=2.0.1
+ASCIIDOCTOR_EPUB3_VERSION=2.1.0
 ASCIIDOCTOR_FB2_VERSION=0.7.0
 ASCIIDOCTOR_MATHEMATICAL_VERSION=0.3.5
 ASCIIDOCTOR_REVEALJS_VERSION=5.1.0