diff --git a/changelog.md b/changelog.md
index 6f716c1..703ae9e 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,16 @@
+## <small>2.0.6 (2021-06-11)</small>
+
+* style: ignore ts error ([aaab81d](https://github.com/posthtml/posthtml-render/commit/aaab81d))
+* fix: incorrect detect json format ([c334ef2](https://github.com/posthtml/posthtml-render/commit/c334ef2))
+* fix: is-json not declare ([85b7bec](https://github.com/posthtml/posthtml-render/commit/85b7bec))
+* build: update depdev ([76c0752](https://github.com/posthtml/posthtml-render/commit/76c0752))
+* test: change to number with quote ([e2f6cb5](https://github.com/posthtml/posthtml-render/commit/e2f6cb5))
+
+
+
 ## <small>2.0.5 (2021-06-10)</small>
 
+* 2.0.5 ([efc4a41](https://github.com/posthtml/posthtml-render/commit/efc4a41))
 * test: for long test ([d019534](https://github.com/posthtml/posthtml-render/commit/d019534))
 * test: invalid in htmlnano travis ([69d666b](https://github.com/posthtml/posthtml-render/commit/69d666b))
 * test: more tests ([4dfa92e](https://github.com/posthtml/posthtml-render/commit/4dfa92e))
diff --git a/package-lock.json b/package-lock.json
index 5344c33..3bf1f94 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "posthtml-render",
-  "version": "2.0.5",
+  "version": "2.0.6",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -6966,6 +6966,11 @@
         "js-types": "^1.0.0"
       }
     },
+    "is-json": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/is-json/-/is-json-2.0.1.tgz",
+      "integrity": "sha1-a+Fm0USCihMdaGiRuYPfYsOUkf8="
+    },
     "is-negated-glob": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-negated-glob/-/is-negated-glob-1.0.0.tgz",
diff --git a/package.json b/package.json
index 1eb1689..90d8bab 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "posthtml-render",
-  "version": "2.0.5",
+  "version": "2.0.6",
   "description": "Renders PostHTML Tree to HTML/XML",
   "license": "MIT",
   "repository": "posthtml/posthtml-render",
@@ -26,6 +26,9 @@
     "html",
     "xml"
   ],
+  "dependencies": {
+    "is-json": "^2.0.1"
+  },
   "devDependencies": {
     "@antfu/eslint-config-ts": "^0.6.4",
     "@commitlint/cli": "^12.1.1",
diff --git a/src/index.ts b/src/index.ts
index b975be6..e507ebb 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,5 @@
+// @ts-expect-error
+import isJSON from 'is-json';
 import {Attributes, NodeText, NodeTag} from 'posthtml-parser';
 import {closingSingleTagOptionEnum, closingSingleTagTypeEnum, Options, quoteStyleEnum} from '../types/index.d';
 
@@ -182,13 +184,8 @@ function render(tree?: Node | Node[], options: Options = {}): string {
 
     for (const [key, value] of Object.entries(object)) {
       if (typeof value === 'string') {
-        let json;
-        try {
-          json = JSON.parse(value);
-        } catch {}
-
-        if (json) {
-          attr += ` ${key}='${value}'`;
+        if (isJSON(value)) {
+          attr += makeAttr(key, value);
         } else if (quoteAllAttributes || ATTRIBUTE_QUOTES_REQUIRED.test(value)) {
           let attrValue = value;
 
diff --git a/test/test-core.spec.ts b/test/test-core.spec.ts
index 622a110..79aef9f 100644
--- a/test/test-core.spec.ts
+++ b/test/test-core.spec.ts
@@ -547,8 +547,8 @@ test('{QuoteStyle} for width/height attrs in img', t => {
     tag: 'img',
     attrs: {
       src: 'https://example.com/example.png',
-      width: 20,
-      height: 20
+      width: '20',
+      height: '20'
     }
   };
   const expected = '<img src="https://example.com/example.png" width="20" height="20">';