diff --git a/wntr/network/elements.py b/wntr/network/elements.py
index e1cecac26..5cd79cdb5 100644
--- a/wntr/network/elements.py
+++ b/wntr/network/elements.py
@@ -434,7 +434,10 @@ class Tank(Node):
                             "mixing_fraction",
                             "mixing_model", 
                             "bulk_coeff", 
-                            "tag"]
+                            "tag",
+                            "leak",
+                            "leak_area",
+                            "leak_discharge_coeff"]
     
     def __init__(self, name, wn):
         super(Tank, self).__init__(wn, name)