diff --git a/freedoi/resolver/urls.py b/freedoi/resolver/urls.py
index 020b06b..d838ffc 100644
--- a/freedoi/resolver/urls.py
+++ b/freedoi/resolver/urls.py
@@ -30,7 +30,7 @@ from .views import (
 
 urlpatterns = [
     path("", HomeView.as_view(), name="home"),
-    path("<prefix>.<suffix>/<identifier>/", resolve_doi, name="resolve_doi"),
+    path("<prefix>.<suffix>/<path:identifier>/", resolve_doi, name="resolve_doi"),
     path("prefixes/", PrefixListView.as_view(), name="prefix_list"),
     path("prefixes/<int:pk>/", PrefixDetailView.as_view(), name="prefix_detail"),
     path("prefixes/create/", PrefixCreateView.as_view(), name="prefix_create"),