diff --git a/packages/roosterjs-content-model-core/lib/command/createModelFromHtml/convertInlineCss.ts b/packages/roosterjs-content-model-core/lib/command/createModelFromHtml/convertInlineCss.ts
index 2e70912a611..e26cae1c002 100644
--- a/packages/roosterjs-content-model-core/lib/command/createModelFromHtml/convertInlineCss.ts
+++ b/packages/roosterjs-content-model-core/lib/command/createModelFromHtml/convertInlineCss.ts
@@ -28,16 +28,18 @@ export function retrieveCssRules(doc: Document): CssRule[] {
     const result: CssRule[] = [];
 
     styles.forEach(styleNode => {
-        const sheet = styleNode.sheet as CSSStyleSheet;
+        const sheet = styleNode.sheet;
 
-        for (let ruleIndex = 0; ruleIndex < sheet.cssRules.length; ruleIndex++) {
-            const rule = sheet.cssRules[ruleIndex] as CSSStyleRule;
+        if (sheet) {
+            for (let ruleIndex = 0; ruleIndex < sheet.cssRules.length; ruleIndex++) {
+                const rule = sheet.cssRules[ruleIndex] as CSSStyleRule;
 
-            if (rule.type == CSSRule.STYLE_RULE && rule.selectorText) {
-                result.push({
-                    selectors: splitSelectors(rule.selectorText),
-                    text: rule.style.cssText,
-                });
+                if (rule.type == CSSRule.STYLE_RULE && rule.selectorText) {
+                    result.push({
+                        selectors: splitSelectors(rule.selectorText),
+                        text: rule.style.cssText,
+                    });
+                }
             }
         }
 
diff --git a/versions.json b/versions.json
index c4a78d6cd0d..51213f48705 100644
--- a/versions.json
+++ b/versions.json
@@ -1,5 +1,8 @@
 {
     "react": "9.0.0",
     "main": "9.9.1",
-    "legacyAdapter": "8.62.1"
+    "legacyAdapter": "8.62.1",
+    "overrides": {
+        "roosterjs-content-model-core": "9.9.2"
+    }
 }