diff --git a/Dockerfile b/Dockerfile
index 60392172..d311b4eb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # Golang version defined in https://github.com/kaishuu0123/erd-go/blob/${ERD_VERSION}/go.mod#L3
 ARG ERD_GOLANG_BUILDER_TAG=1.15-alpine
 ARG A2S_GOLANG_BUILDER_TAG=1.20-alpine3.18
-ARG alpine_version=3.18.4
+ARG alpine_version=3.18.5
 FROM alpine:${alpine_version} AS base
 
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
diff --git a/README.adoc b/README.adoc
index b06d10fc..a2b102e6 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,4 +1,4 @@
-:ALPINE_VERSION: 3.18.4
+:ALPINE_VERSION: 3.18.5
 :ASCIIDOCTOR_VERSION: 2.0.20
 :ASCIIDOCTOR_CONFLUENCE_VERSION: 0.0.2
 :ASCIIDOCTOR_PDF_VERSION: 2.3.9
diff --git a/README.md b/README.md
index 6e0890e6..38f6463a 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/) 2.2.13 with ERD and Graphviz integration (supports plantuml and graphiz diagrams)
+-   [Asciidoctor Diagram](https://asciidoctor.org/docs/asciidoctor-diagram/) 2.2.14 with ERD and Graphviz integration (supports plantuml and graphiz diagrams)
 
 -   [Asciidoctor PDF](https://asciidoctor.org/docs/asciidoctor-pdf/) 2.3.9
 
@@ -26,11 +26,11 @@ This Docker image provides:
 
 -   [Asciidoctor Bibtex](https://github.com/asciidoctor/asciidoctor-bibtex) 0.8.0
 
--   [Asciidoctor Kroki](https://github.com/Mogztter/asciidoctor-kroki) 0.8.0
+-   [Asciidoctor Kroki](https://github.com/Mogztter/asciidoctor-kroki) 0.9.1
 
 -   [Asciidoctor Reducer](https://github.com/asciidoctor/asciidoctor-reducer) 1.0.2
 
-This image uses Alpine Linux 3.18.3 as base image.
+This image uses Alpine Linux 3.18.5 as base image.
 
 <div class="note">
 
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index 4bf4f2dd..fa1e8efa 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 
 TMP_GENERATION_DIR="${BATS_TEST_DIRNAME}/tmp"
-ALPINE_VERSION=3.18.4
+ALPINE_VERSION=3.18.5
 ASCIIDOCTOR_VERSION=2.0.20
 ASCIIDOCTOR_CONFLUENCE_VERSION=0.0.2
 ASCIIDOCTOR_PDF_VERSION=2.3.9