diff --git a/src/json3.jl b/src/json3.jl
index bdf3a4f..3e03c8e 100644
--- a/src/json3.jl
+++ b/src/json3.jl
@@ -9,8 +9,5 @@ const StructTypes = JSON3.StructTypes
 StructTypes.StructType(::Type{<:PlotlyBase.Plot}) = JSON3.RawType()
 JSON3.rawbytes(plot::PlotlyBase.Plot) = codeunits(JSON.json(plot))
 
-StructTypes.StructType(::Type{<:PlotlyBase.AbstractTrace}) = JSON3.RawType()
-JSON3.rawbytes(trace::PlotlyBase.AbstractTrace) = codeunits(JSON.json(trace))
-  
-StructTypes.StructType(::Type{<:AbstractLayout}) = JSON3.RawType()
-JSON3.rawbytes(layout::AbstractLayout) = codeunits(JSON.json(layout))
+StructTypes.StructType(::Type{<:HasFields}) = JSON3.RawType()
+JSON3.rawbytes(x::HasFields) = codeunits(JSON.json(x))
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