diff --git a/package.json b/package.json
index 77c20cc..a4db40f 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "yuika"
   ],
   "dependencies": {
-    "@damillora/shian": "^2.0.1",
+    "@damillora/shian": "3",
     "autoprefixer": "^10.2.1",
     "gulp": "^4.0.2",
     "gulp-clean-css": "^4.2.0",
diff --git a/yarn.lock b/yarn.lock
index 1da84d9..640c024 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -868,10 +868,12 @@
     "@babel/helper-validator-identifier" "^7.14.5"
     to-fast-properties "^2.0.0"
 
-"@damillora/shian@^2.0.1":
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/@damillora/shian/-/shian-2.2.0.tgz#fee06946796e2759e2afe958b8181a137e5a4bc0"
-  integrity sha512-F/EHL1eVNPO/wQHW+hvMlSs9Nwqa58MoF8Oe23MGyAqze4T1lsxjNIOPUomiNLlEnNR9gWd1mn/06x72JVg5qw==
+"@damillora/shian@3":
+  version "3.3.1"
+  resolved "https://registry.yarnpkg.com/@damillora/shian/-/shian-3.3.1.tgz#648c84c1c9971851fd13bc1b046d3d11910be906"
+  integrity sha512-nwL8hn2+hXtALCpcCmhi5PaxjTQNbYbrfDIWA9AvQ8dgoc8FZ0XAFpswcPXlsqjCMuUa+cc5Ozq8BEpbfR7euw==
+  dependencies:
+    sass "^1.35.1"
 
 "@discoveryjs/json-ext@^0.5.0":
   version "0.5.3"
@@ -2402,6 +2404,21 @@ chalk@^4.0.0, chalk@^4.1.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
+"chokidar@>=3.0.0 <4.0.0", chokidar@^3.4.1:
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.5.2.tgz#dba3976fcadb016f66fd365021d91600d01c1e75"
+  integrity sha512-ekGhOnNVPgT77r4K/U3GDhu+FQ2S8TnK/s2KbIGXi0SZWuwkZ2QNyfWdZW+TVfn84DpEP7rLeCt2UI6bJ8GwbQ==
+  dependencies:
+    anymatch "~3.1.2"
+    braces "~3.0.2"
+    glob-parent "~5.1.2"
+    is-binary-path "~2.1.0"
+    is-glob "~4.0.1"
+    normalize-path "~3.0.0"
+    readdirp "~3.6.0"
+  optionalDependencies:
+    fsevents "~2.3.2"
+
 chokidar@^2.0.0, chokidar@^2.1.8:
   version "2.1.8"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.1.8.tgz#804b3a7b6a99358c3c5c61e71d8728f041cff917"
@@ -2421,21 +2438,6 @@ chokidar@^2.0.0, chokidar@^2.1.8:
   optionalDependencies:
     fsevents "^1.2.7"
 
-chokidar@^3.4.1:
-  version "3.5.2"
-  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.5.2.tgz#dba3976fcadb016f66fd365021d91600d01c1e75"
-  integrity sha512-ekGhOnNVPgT77r4K/U3GDhu+FQ2S8TnK/s2KbIGXi0SZWuwkZ2QNyfWdZW+TVfn84DpEP7rLeCt2UI6bJ8GwbQ==
-  dependencies:
-    anymatch "~3.1.2"
-    braces "~3.0.2"
-    glob-parent "~5.1.2"
-    is-binary-path "~2.1.0"
-    is-glob "~4.0.1"
-    normalize-path "~3.0.0"
-    readdirp "~3.6.0"
-  optionalDependencies:
-    fsevents "~2.3.2"
-
 chownr@^1.1.1:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
@@ -7028,6 +7030,13 @@ safe-regex@^1.1.0:
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
   integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
 
+sass@^1.35.1:
+  version "1.35.2"
+  resolved "https://registry.yarnpkg.com/sass/-/sass-1.35.2.tgz#b732314fcdaf7ef8d0f1698698adc378043cb821"
+  integrity sha512-jhO5KAR+AMxCEwIH3v+4zbB2WB0z67V1X0jbapfVwQQdjHZUGUyukpnoM6+iCMfsIUC016w9OPKQ5jrNOS9uXw==
+  dependencies:
+    chokidar ">=3.0.0 <4.0.0"
+
 schema-utils@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-1.0.0.tgz#0b79a93204d7b600d4b2850d1f66c2a34951c770"