diff --git a/docker/devenv/files/Caddyfile b/docker/devenv/files/Caddyfile
index 719ed142ae..eb822a91c3 100644
--- a/docker/devenv/files/Caddyfile
+++ b/docker/devenv/files/Caddyfile
@@ -1,16 +1,17 @@
 {
-    auto_https off
+	auto_https off
 }
 
 localhost:3449 {
-   reverse_proxy localhost:4449
-   tls /home/selfsigned.crt /home/selfsigned.key
+	reverse_proxy localhost:4449
+	tls /home/selfsigned.crt /home/selfsigned.key
+	header -Strict-Transport-Security
 }
 
 http://localhost:3450 {
-   reverse_proxy localhost:4449
+	reverse_proxy localhost:4449
 }
 
 http://penpot-devenv-main:3450 {
-    reverse_proxy localhost:4449
+	reverse_proxy localhost:4449
 }