diff --git a/cloud-run/Dockerfile b/cloud-run/Dockerfile
index 7106b32..2cfc57f 100644
--- a/cloud-run/Dockerfile
+++ b/cloud-run/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/vivliostyle/cli:8.3.1
+FROM ghcr.io/vivliostyle/cli:8.4.0
 LABEL maintainer "Vivliostyle Foundation <mail@vivliostyle.org>"
 
 WORKDIR /usr/src/app
diff --git a/web/package.json b/web/package.json
index b188752..65cc9ae 100644
--- a/web/package.json
+++ b/web/package.json
@@ -22,7 +22,7 @@
     "@octokit/auth-app": "^3.6.1",
     "@octokit/graphql": "^4.8.0",
     "@octokit/rest": "^18.12.0",
-    "@vivliostyle/vfm": "2.1.0",
+    "@vivliostyle/vfm": "2.2.0",
     "@vivliostyle/viewer": "2.25.6",
     "apollo-server-micro": "^3.6.2",
     "chakra-ui-contextmenu": "^1.0.3",
diff --git a/web/yarn.lock b/web/yarn.lock
index 4e03ab4..14cee53 100644
--- a/web/yarn.lock
+++ b/web/yarn.lock
@@ -3435,10 +3435,10 @@
   dependencies:
     fast-diff "^1.2.0"
 
-"@vivliostyle/vfm@2.1.0":
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/@vivliostyle/vfm/-/vfm-2.1.0.tgz#8d4e068123cffe1c2081ce3a1389c4fbe003d42d"
-  integrity sha512-qs26plUnRTd/XGQd7iLVkpSIY3pYPxwvYty8QJsSt+i9uS5W+LEY3QSRoWvbJTHco0IS8mmPmmf4XouABSQaQg==
+"@vivliostyle/vfm@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@vivliostyle/vfm/-/vfm-2.2.0.tgz#f62929bf92b5a3630ba8a26bb607f31d24aeb7e2"
+  integrity sha512-YlkfwmVpo0azJDkLKizCoK0UVGrjRM1UybPMeQnj/3qJYvWezMDNPzBDgOe0W94SCBux8ufO6KuGYyHvm/Z3wg==
   dependencies:
     debug "^4.3.1"
     doctype "^2.0.4"
@@ -4722,9 +4722,9 @@ fast-deep-equal@^3.1.1, fast-deep-equal@^3.1.3:
   integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
 
 fast-diff@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/fast-diff/-/fast-diff-1.2.0.tgz#73ee11982d86caaf7959828d519cfe927fac5f03"
-  integrity sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/fast-diff/-/fast-diff-1.3.0.tgz#ece407fa550a64d638536cd727e129c61616e0f0"
+  integrity sha512-VxPP4NqbUjj6MaAOafWeUn2cXWLcCtljklUtZf0Ind4XQ+QPtmA0b18zZy0jIQx+ExRVCR/ZQpBmik5lXshNsw==
 
 fast-glob@^3.1.1:
   version "3.2.7"