diff --git a/services/collaboration/pkg/server/http/server.go b/services/collaboration/pkg/server/http/server.go
index b07fa797dbe..e1a4419967e 100644
--- a/services/collaboration/pkg/server/http/server.go
+++ b/services/collaboration/pkg/server/http/server.go
@@ -181,6 +181,13 @@ func prepareRoutes(r *chi.Mux, options Options) {
 				},
 				colabmiddleware.CollaborationTracingMiddleware,
 			)
+			// check whether we should check for proof keys
+			if !options.Config.App.ProofKeys.Disable {
+				r.Use(func(h stdhttp.Handler) stdhttp.Handler {
+					return colabmiddleware.ProofKeysMiddleware(options.Config, h)
+				})
+			}
+
 			r.Get("/", func(w stdhttp.ResponseWriter, r *stdhttp.Request) {
 				adapter.GetFile(w, r)
 			})