diff --git a/.gitignore b/.gitignore
index e8916d1..005873a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 .venv
 .coverage
 .tmp
+.cache
 
 **/*.pyc
 **/*.egg-info
diff --git a/docs/_headers b/docs/_headers
new file mode 100644
index 0000000..c9fab33
--- /dev/null
+++ b/docs/_headers
@@ -0,0 +1,2 @@
+/*
+  Strict-Transport-Security: max-age=31536000; includeSubDomains
diff --git a/mkdocs.yml b/mkdocs.yml
index d6ca0db..bbd0dea 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -115,3 +115,5 @@ markdown_extensions:
 #   <div id="center_copyright"><a href="https://go.microsoft.com/fwlink/?LinkId=521839">Privacy & Cookies</a> | <a href="https://go.microsoft.com/fwlink/?linkid=2259814">Consumer Health Privacy</a> | <a href="https://www.microsoft.com/trademarks">Trademarks</a> | <a href="https://go.microsoft.com/fwlink/?LinkID=206977">Terms of use</a> | © 2024 Microsoft</div>
 extra:
   generator: false
+  include:
+    - _headers
diff --git a/template/.gitignore.jinja b/template/.gitignore.jinja
index 7cb4a14..4c8bd1e 100644
--- a/template/.gitignore.jinja
+++ b/template/.gitignore.jinja
@@ -1,6 +1,7 @@
 .venv
 .coverage
 .tmp
+.cache
 
 **/*.pyc
 **/*.egg-info
diff --git a/template/{% if documentation %}mkdocs.yml{% endif %}.jinja b/template/{% if documentation %}mkdocs.yml{% endif %}.jinja
index 9ba1f5b..340c39d 100644
--- a/template/{% if documentation %}mkdocs.yml{% endif %}.jinja	
+++ b/template/{% if documentation %}mkdocs.yml{% endif %}.jinja	
@@ -109,4 +109,6 @@ copyright: |
   <div id="center_copyright"><a href="https://go.microsoft.com/fwlink/?LinkId=521839">Privacy & Cookies</a> | <a href="https://go.microsoft.com/fwlink/?linkid=2259814">Consumer Health Privacy</a> | <a href="https://www.microsoft.com/trademarks">Trademarks</a> | <a href="https://go.microsoft.com/fwlink/?LinkID=206977">Terms of use</a> | © 2024 Microsoft</div>
 extra:
   generator: false
+  include:
+    - _headers
 {%- endif %}