diff --git a/SecurityPolicy.html b/SecurityPolicy.html
index 30be1af..c6799aa 100644
--- a/SecurityPolicy.html
+++ b/SecurityPolicy.html
@@ -1,4 +1,4 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
                       "http://www.w3.org/TR/html4/loose.dtd">
 <html>
  <head>
