diff --git a/core/emperor.c b/core/emperor.c
index abbccf71..f36eca10 100644
--- a/core/emperor.c
+++ b/core/emperor.c
@@ -1226,8 +1226,10 @@ int uwsgi_emperor_vassal_start(struct uwsgi_instance *n_ui) {
 		uwsgi.emperor_broodlord_num++;
 	}
 
-	// TODO pre-start hook
 
+	if (uwsgi_hooks_run_and_return(uwsgi.hook_as_emperor_before_vassal, "as-emperor-before-vassal", NULL, 0)) {
+        	emperor_del(n_ui);
+        }
 
 	// check for fork server
 	char *fork_server = uwsgi.emperor_use_fork_server;
@@ -1371,6 +1373,8 @@ static void uwsgi_emperor_spawn_vassal(struct uwsgi_instance *n_ui) {
 	}
 #endif
 
+	uwsgi_hooks_run(uwsgi.hook_as_vassal_before_drop, "as-vassal-before-drop", 1);
+
 #ifdef UWSGI_CAP
 #if defined(CAP_LAST_CAP) && defined(PR_CAPBSET_READ) && defined(PR_CAPBSET_DROP)
 	if (uwsgi.emperor_cap && uwsgi.emperor_cap_count > 0) {
diff --git a/core/uwsgi.c b/core/uwsgi.c
index 6529ed90..3df6b24c 100644
--- a/core/uwsgi.c
+++ b/core/uwsgi.c
@@ -422,6 +422,9 @@ static struct uwsgi_option uwsgi_base_options[] = {
 
         {"hook-as-on-demand-vassal", required_argument, 0, "run the specified hook whenever a vassal enters on-demand mode", uwsgi_opt_add_string_list, &uwsgi.hook_as_on_demand_vassal, 0},
 
+        {"hook-as-emperor-before-vassal", required_argument, 0, "run the specified hook before the new vassal is spawned", uwsgi_opt_add_string_list, &uwsgi.hook_as_emperor_before_vassal, 0},
+        {"hook-as-vassal-before-drop", required_argument, 0, "run the specified hook into vassal, before dropping its privileges", uwsgi_opt_add_string_list, &uwsgi.hook_as_vassal_before_drop, 0},
+
         {"hook-as-mule", required_argument, 0, "run the specified hook in each mule", uwsgi_opt_add_string_list, &uwsgi.hook_as_mule, 0},
 
         {"hook-as-gateway", required_argument, 0, "run the specified hook in each gateway", uwsgi_opt_add_string_list, &uwsgi.hook_as_gateway, 0},
diff --git a/uwsgi.h b/uwsgi.h
index f537eafd..f7b68b4a 100644
--- a/uwsgi.h
+++ b/uwsgi.h
@@ -2741,6 +2741,8 @@ struct uwsgi_server {
 	char *emperor_chdir_attr;
 	struct uwsgi_string_list *subscription_algos;
 	int subscription_mountpoints;
+	struct uwsgi_string_list *hook_as_emperor_before_vassal;
+	struct uwsgi_string_list *hook_as_vassal_before_drop;
 };
 
 struct uwsgi_rpc {