diff --git a/lib/galaxy/model/custom_types.py b/lib/galaxy/model/custom_types.py
index 8152802adff8..3db767af281a 100644
--- a/lib/galaxy/model/custom_types.py
+++ b/lib/galaxy/model/custom_types.py
@@ -117,6 +117,8 @@ def compare_values(self, x, y):
 
 
 class DoubleEncodedJsonType(JSONType):
+    cache_ok = True
+
     def process_result_value(self, value, dialect):
         value = super().process_result_value(value, dialect)
         if isinstance(value, str):