diff --git a/.eslintrc.yml b/.eslintrc.yml
index 5e96617..aa3fa82 100644
--- a/.eslintrc.yml
+++ b/.eslintrc.yml
@@ -1,19 +1,19 @@
 root: true
 
 extends:
-    - plugin:@mysticatea/es2020
+    - plugin:@eslint-community/mysticatea/es2020
 
 rules:
-    "@mysticatea/prettier": "off"
+    "@eslint-community/mysticatea/prettier": "off"
 
 overrides:
     - files:
           - src/**/*.js
           - test/**/*.js
       extends:
-          - plugin:@mysticatea/+modules
+          - plugin:@eslint-community/mysticatea/+modules
       rules:
           init-declarations: "off"
-          "@mysticatea/node/no-unsupported-features/es-syntax":
+          "@eslint-community/mysticatea/node/no-unsupported-features/es-syntax":
               - error
               - ignores: [modules]
diff --git a/package.json b/package.json
index 7955346..0e3bbd4 100644
--- a/package.json
+++ b/package.json
@@ -19,17 +19,17 @@
         "./package.json": "./package.json"
     },
     "dependencies": {
-        "eslint-visitor-keys": "^2.1.0"
+        "eslint-visitor-keys": "^3.3.0"
     },
     "devDependencies": {
-        "@mysticatea/eslint-plugin": "^13.0.0",
-        "dot-prop": "^4.2.1",
+        "@eslint-community/eslint-plugin-mysticatea": "^15.2.0",
+        "dot-prop": "^6.0.1",
         "eslint": "^7.32.0",
         "esm": "^3.2.25",
         "espree": "github:eslint/espree#1c744b3a602b783926344811a9459b92afe57444",
-        "mocha": "^6.2.3",
+        "mocha": "^8.4.0",
         "npm-run-all": "^4.1.5",
-        "nyc": "^14.1.1",
+        "nyc": "^15.1.0",
         "opener": "^1.5.2",
         "prettier": "2.7.1",
         "rimraf": "^3.0.2",
@@ -53,7 +53,7 @@
         "format": "npm run -s format:prettier -- --write",
         "format:prettier": "prettier docs/.vuepress/config.js src/**/*.js test/**/*.js rollup.config.js .vscode/*.json *.json .github/**/*.yml *.yml docs/**/*.md *.md",
         "format:check": "npm run -s format:prettier -- --check",
-        "lint": "eslint docs/.vuepress/config.js src test rollup.config.js",
+        "lint": "eslint .",
         "test": "nyc mocha --reporter dot \"test/*.js\"",
         "preversion": "npm test && npm run -s build",
         "postversion": "git push && git push --tags",
diff --git a/src/get-static-value.js b/src/get-static-value.js
index f3a3643..3268f5c 100644
--- a/src/get-static-value.js
+++ b/src/get-static-value.js
@@ -228,7 +228,7 @@ const operations = Object.freeze({
                 case "%":
                     return { value: left.value % right.value }
                 case "**":
-                    return { value: Math.pow(left.value, right.value) }
+                    return { value: left.value**right.value }
                 case "|":
                     return { value: left.value | right.value }
                 case "^":
diff --git a/src/has-side-effect.js b/src/has-side-effect.js
index 188f1ca..2d781d6 100644
--- a/src/has-side-effect.js
+++ b/src/has-side-effect.js
@@ -1,4 +1,4 @@
-import evk from "eslint-visitor-keys"
+import * as evk from "eslint-visitor-keys"
 
 const typeConversionBinaryOps = Object.freeze(
     new Set([