diff --git a/_config.yml b/_config.yml
index 51d96a0..5c5427f 100644
--- a/_config.yml
+++ b/_config.yml
@@ -34,4 +34,9 @@ markdown: kramdown
 highlighter: rouge
 kramdown:
   input: GFM
-  syntax_highlighter: rouge
\ No newline at end of file
+  syntax_highlighter: rouge
+
+webrick:
+  headers:
+    Content-Security-Policy: default-src 'self';
+    Strict-Transport-Security: max-age=31536000; includeSubDomains
\ No newline at end of file