diff --git a/server/routes/types.go b/server/routes/types.go
index 408c017..6569b74 100644
--- a/server/routes/types.go
+++ b/server/routes/types.go
@@ -25,6 +25,9 @@ func RenderWithContentType[T any](w http.ResponseWriter, r *http.Request, conten
 	// Set strong ETag
 	w.Header().Set("ETag", `"`+etag+`"`)
 
+	// As a default, set Cache-Control to no-cache, which allows revalidation via ETag
+	w.Header().Set("Cache-Control", "no-cache")
+
 	w.WriteHeader(request_context.Get(r).RenderStatusCode)
 
 	return nil