diff --git a/Dockerfile b/Dockerfile
index 46aa1138..e916943e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -82,7 +82,7 @@ RUN apk add --no-cache \
   font-noto-cjk
 
 ARG asciidoctor_confluence_version=0.0.2
-ARG asciidoctor_diagram_version=2.2.10
+ARG asciidoctor_diagram_version=2.2.11
 ARG asciidoctor_epub3_version=1.5.1
 ARG asciidoctor_fb2_version=0.7.0
 ARG asciidoctor_mathematical_version=0.3.5
diff --git a/README.adoc b/README.adoc
index ffa6ef89..a4b013c6 100644
--- a/README.adoc
+++ b/README.adoc
@@ -2,7 +2,7 @@
 :ASCIIDOCTOR_VERSION: 2.0.20
 :ASCIIDOCTOR_CONFLUENCE_VERSION: 0.0.2
 :ASCIIDOCTOR_PDF_VERSION: 2.3.9
-:ASCIIDOCTOR_DIAGRAM_VERSION: 2.2.10
+:ASCIIDOCTOR_DIAGRAM_VERSION: 2.2.11
 :ASCIIDOCTOR_EPUB3_VERSION: 1.5.1
 :ASCIIDOCTOR_FB2_VERSION: 0.7.0
 :ASCIIDOCTOR_MATHEMATICAL_VERSION: 0.3.5
diff --git a/README.md b/README.md
index e4a35b7a..8c476262 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This Docker image provides:
 
 -   [Asciidoctor](https://asciidoctor.org/) 2.0.20
 
--   [Asciidoctor Diagram](https://asciidoctor.org/docs/asciidoctor-diagram/) 2.2.10 with ERD and Graphviz integration (supports plantuml and graphiz diagrams)
+-   [Asciidoctor Diagram](https://asciidoctor.org/docs/asciidoctor-diagram/) 2.2.11 with ERD and Graphviz integration (supports plantuml and graphiz diagrams)
 
 -   [Asciidoctor PDF](https://asciidoctor.org/docs/asciidoctor-pdf/) 2.3.9
 
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index 615e9239..576aec2c 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -5,7 +5,7 @@ ALPINE_VERSION=3.18.3
 ASCIIDOCTOR_VERSION=2.0.20
 ASCIIDOCTOR_CONFLUENCE_VERSION=0.0.2
 ASCIIDOCTOR_PDF_VERSION=2.3.9
-ASCIIDOCTOR_DIAGRAM_VERSION=2.2.10
+ASCIIDOCTOR_DIAGRAM_VERSION=2.2.11
 ASCIIDOCTOR_EPUB3_VERSION=1.5.1
 ASCIIDOCTOR_FB2_VERSION=0.7.0
 ASCIIDOCTOR_MATHEMATICAL_VERSION=0.3.5