diff --git a/pyhoma/enums.py b/pyhoma/enums.py
index 0f7f9286..2dbaaedd 100644
--- a/pyhoma/enums.py
+++ b/pyhoma/enums.py
@@ -103,6 +103,7 @@ class ExecutionSubType(Enum):
     ACTION_GROUP = "ACTION_GROUP"
     ACTION_GROUP_SEQUENCE = "ACTION_GROUP_SEQUENCE"
     DAWN_TRIGGER = "DAWN_TRIGGER"
+    DUSK_TRIGGER = "DUSK_TRIGGER"
     DISCRETE_TRIGGER_USER = "DISCRETE_TRIGGER_USER"
     GENERIC_COMMAND_SCHEDULING = "GENERIC_COMMAND_SCHEDULING"
     IFT_CONDITION = "IFT_CONDITION"