diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 58755fcf..366770f4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -56,8 +56,12 @@ jobs:
       fail-fast: false
       matrix:
         container:
+          - ubuntu:18.04 # glibc 2.27
           - ubuntu:20.04 # glibc 2.31
+          - debian:10-slim # glibc 2.28
           - debian:11-slim # glibc 2.31
+          - rockylinux:8 # glibc 2.28
+          - rockylinux:8-minimal # glibc 2.28
         tool:
           # valgrind: installing snap to container is difficult...
           - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch
@@ -65,30 +69,16 @@ jobs:
           - container: ubuntu:22.04 # glibc 2.35
             # cargo-udeps depends on openssl 1.1
             tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch
-          - container: ubuntu:18.04 # glibc 2.27
-            # The latest mdbook provides prebuilt binaries for musl host, but we don't support it yet (will be done by https://github.com/taiki-e/install-action/pull/27)
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook-linkcheck,cargo-watch
-          - container: debian:10-slim # glibc 2.28
-            # The latest mdbook provides prebuilt binaries for musl host, but we don't support it yet (will be done by https://github.com/taiki-e/install-action/pull/27)
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook-linkcheck,cargo-watch
           - container: fedora:latest # glibc 2.36 (as of fedora 37)
             # cargo-udeps depends on openssl 1.1
             tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch
-          - container: rockylinux:8 # glibc 2.28
-            # The latest mdbook provides prebuilt binaries for musl host, but we don't support it yet (will be done by https://github.com/taiki-e/install-action/pull/27)
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook-linkcheck,cargo-watch
-          - container: rockylinux:8-minimal # glibc 2.28
-            # The latest mdbook provides prebuilt binaries for musl host, but we don't support it yet (will be done by https://github.com/taiki-e/install-action/pull/27)
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook-linkcheck,cargo-watch
           - container: centos:7 # glibc 2.17
             # cargo-udeps,protoc,valgrind,wasmtime,mdbook-linkcheck,cargo-watch don't provide prebuilt binaries for musl host.
-            # The latest mdbook provides prebuilt binaries for musl host, but we don't support it yet (will be done by https://github.com/taiki-e/install-action/pull/27)
             # we don't support nextest on very old glibc due to https://github.com/taiki-e/install-action/issues/13.
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-valgrind,cargo-deny,cross,shellcheck,shfmt,wasm-pack,cargo-binstall
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-valgrind,cargo-deny,cross,shellcheck,shfmt,wasm-pack,mdbook,cargo-binstall
           - container: alpine:latest # musl 1.2.3 (as of alpine 3.17)
             # cargo-udeps,protoc,valgrind,wasmtime,mdbook-linkcheck,cargo-watch don't provide prebuilt binaries for musl host.
-            # The latest mdbook provides prebuilt binaries for musl host, but we don't support it yet (will be done by https://github.com/taiki-e/install-action/pull/27)
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-valgrind,cargo-deny,cross,nextest,shellcheck,shfmt,wasm-pack,cargo-binstall
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-valgrind,cargo-deny,cross,nextest,shellcheck,shfmt,wasm-pack,mdbook,cargo-binstall
     runs-on: ubuntu-latest
     container: ${{ matrix.container }}
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3742d1f6..c3c583cd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 ## [Unreleased]
 
 - Update `mdbook@latest` to 0.4.23.
+- Support `mdbook` on Linux (musl).
 
 ## [1.17.0] - 2022-12-14
 
diff --git a/main.sh b/main.sh
index f980e6d8..c80161db 100755
--- a/main.sh
+++ b/main.sh
@@ -601,7 +601,12 @@ for tool in "${tools[@]}"; do
             esac
             base_url="https://github.com/${repo}/releases/download/v${version}/${tool}-v${version}"
             case "${OSTYPE}" in
-                linux*) url="${base_url}-x86_64-unknown-linux-gnu.tar.gz" ;;
+                linux*)
+                    case "${version}" in
+                        0.[1-3].* | 0.4.? | 0.4.1? | 0.4.2[0-1]) url="${base_url}-x86_64-unknown-linux-gnu.tar.gz" ;;
+                        *) url="${base_url}-${host_arch}-unknown-linux-musl.tar.gz" ;;
+                    esac
+                    ;;
                 darwin*) url="${base_url}-x86_64-apple-darwin.tar.gz" ;;
                 cygwin* | msys*) url="${base_url}-x86_64-pc-windows-msvc.zip" ;;
                 *) bail "unsupported OSTYPE '${OSTYPE}' for ${tool}" ;;