diff --git a/.changeset/smart-rules-hunt.md b/.changeset/smart-rules-hunt.md
new file mode 100644
index 00000000..20679da8
--- /dev/null
+++ b/.changeset/smart-rules-hunt.md
@@ -0,0 +1,5 @@
+---
+"setup-gap": minor
+---
+
+Set the default port for the dynamic proxy to 443
diff --git a/actions/setup-gap/action.yml b/actions/setup-gap/action.yml
index 99f1beea..baff7b81 100644
--- a/actions/setup-gap/action.yml
+++ b/actions/setup-gap/action.yml
@@ -85,9 +85,9 @@ inputs:
     required: false
     default: "info"
   dynamic-proxy-port:
-    description: "The port the dynamic proxy will listen on. Defaults to 9090."
+    description: "The port the dynamic proxy will listen on. Defaults to 443."
     required: false
-    default: "9090"
+    default: "443"
   main-dns-zone:
     description:
       "The DNS zone is used for exposing services. It is required when using the