diff --git a/snippets/secure.conf b/snippets/secure.conf
index 2800c86..0e69f96 100644
--- a/snippets/secure.conf
+++ b/snippets/secure.conf
@@ -1,10 +1,19 @@
+set_secure_random_alphanum $cspNonce 32;
+# usage 
+#<script nonce="**CSP_NONCE**">
+# 
+# sub filter to ensure that the CSP NONCE is introduce
 
 add_header Content-Security-Policy "default-src 'none'; img-src 'self'; \
-    script-src 'self'; style-src 'self' 'unsafe-inline'; \
+    script-src 'self' 'nonce-$cspNonce'; style-src 'self' 'unsafe-inline'; \
     font-src 'self'; base-uri 'self'; form-action 'self';\
      connect-src 'self'; frame-ancestors 'none'";
 add_header X-Content-Type-Options nosniff;
 add_header X-Frame-Options DENY;
 add_header X-XSS-Protection "1; mode=block" always;
 add_header Referrer-Policy "strict-origin";
-add_header Strict-Transport-Security "max-age=31536000" always;
\ No newline at end of file
+add_header Strict-Transport-Security "max-age=31536000" always;
+
+#sub_filter_once off;
+#sub_filter_types text/html; # or *
+#sub_filter **CSP_NONCE** $cspNonce;
\ No newline at end of file