diff --git a/phpBB/styles/prosilver/template/overall_header.html b/phpBB/styles/prosilver/template/overall_header.html
index 96ccf039a0..098728a414 100644
--- a/phpBB/styles/prosilver/template/overall_header.html
+++ b/phpBB/styles/prosilver/template/overall_header.html
@@ -39,7 +39,7 @@
 
 	(function(d) {
 		var wf = d.createElement('script'), s = d.scripts[0];
-		wf.src = 'https://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js';
+		wf.src = 'https://cdn.jsdelivr.net/npm/webfontloader@1.6.28/webfontloader.min.js';
 		wf.async = true;
 		s.parentNode.insertBefore(wf, s);
 	})(document);
diff --git a/phpBB/styles/prosilver/template/simple_header.html b/phpBB/styles/prosilver/template/simple_header.html
index d5ab23a94a..b5878517a3 100644
--- a/phpBB/styles/prosilver/template/simple_header.html
+++ b/phpBB/styles/prosilver/template/simple_header.html
@@ -17,7 +17,7 @@
 
 	(function(d) {
 		var wf = d.createElement('script'), s = d.scripts[0];
-		wf.src = 'https://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js';
+		wf.src = 'https://cdn.jsdelivr.net/npm/webfontloader@1.6.28/webfontloader.min.js';
 		wf.async = true;
 		s.parentNode.insertBefore(wf, s);
 	})(document);