diff --git a/gluon/packages/dal b/gluon/packages/dal
index 8e544905..32871a9c 160000
--- a/gluon/packages/dal
+++ b/gluon/packages/dal
@@ -1 +1 @@
-Subproject commit 8e544905d3304c587f52cdedd3948cf586c4f7ae
+Subproject commit 32871a9c1572e4917702f9eb82db72518bc6a7d9
diff --git a/gluon/serializers.py b/gluon/serializers.py
index a72bc216..a1064ebc 100644
--- a/gluon/serializers.py
+++ b/gluon/serializers.py
@@ -82,7 +82,7 @@ def custom_json(o):
     elif isinstance(o, integer_types):
         return int(o)
     elif isinstance(o, decimal.Decimal):
-        return str(o)
+        return float(o)
     elif isinstance(o, (bytes, bytearray)):
         return str(o)
     elif isinstance(o, lazyT):