diff --git a/modules/ppcp-button/resources/js/button.js b/modules/ppcp-button/resources/js/button.js
index 23a9d71b9..9d9d792ae 100644
--- a/modules/ppcp-button/resources/js/button.js
+++ b/modules/ppcp-button/resources/js/button.js
@@ -240,6 +240,6 @@ document.addEventListener(
             return;
         }
 
-        document.body.append(script);
+        document.body.appendChild(script);
     },
 );
diff --git a/modules/ppcp-button/resources/js/modules/DataClientIdAttributeHandler.js b/modules/ppcp-button/resources/js/modules/DataClientIdAttributeHandler.js
index 9888bc0b8..67fc8cc45 100644
--- a/modules/ppcp-button/resources/js/modules/DataClientIdAttributeHandler.js
+++ b/modules/ppcp-button/resources/js/modules/DataClientIdAttributeHandler.js
@@ -39,7 +39,7 @@ const dataClientIdAttributeHandler = (script, config) => {
         }
         storeToken(data);
         script.setAttribute('data-client-token', data.token);
-        document.body.append(script);
+        document.body.appendChild(script);
     });
 }
 
diff --git a/modules/ppcp-onboarding/assets/js/onboarding.js b/modules/ppcp-onboarding/assets/js/onboarding.js
index 23dc00c42..1c7dd9cd0 100644
--- a/modules/ppcp-onboarding/assets/js/onboarding.js
+++ b/modules/ppcp-onboarding/assets/js/onboarding.js
@@ -54,7 +54,7 @@ const ppcp_onboarding = {
 		const paypalScriptTag = document.createElement('script');
 		paypalScriptTag.id = ppcp_onboarding.PAYPAL_JS_ID;
 		paypalScriptTag.src = PayPalCommerceGatewayOnboarding.paypal_js_url;
-		document.body.append(paypalScriptTag);
+		document.body.appendChild(paypalScriptTag);
 
 		if (ppcp_onboarding._timeout) {
 			clearTimeout(ppcp_onboarding._timeout);