Strawberry GraphQL @ 0.288.0

Released December 28, 2025 at 10:48 AM GMT+00:00

eprecate passing a class to strawberry.scalar() . Use scalar_map in StrawberryConfig instead for better type checking support.

# Before (deprecated)
Base64 = strawberry.scalar(
    NewType("Base64", bytes),
    serialize=lambda v: base64.b64encode(v).decode(),
    parse_value=lambda v: base64.b64decode(v),
)

Instead, use scalar_map in StrawberryConfig :

# Recommended
Base64 = NewType("Base64", bytes)
 
schema = strawberry.Schema(
    query=Query,
    config=StrawberryConfig(
        scalar_map={
            Base64: strawberry.scalar(
                name="Base64",
                serialize=lambda v: base64.b64encode(v).decode(),
                parse_value=lambda v: base64.b64decode(v),
            )
        }
    ),
)

This release also removes internal scalar wrapper exports (Date , DateTime , etc.) from strawberry.schema.types.base_scalars . Most users are likely not using these, but if you were, a codemod is available to help with the migration: strawberry upgrade replace-scalar-wrappers .

More info about custom scalars at the updated doc page: https://strawberry.rocks/docs/types/scalars#scalars

Releases contributed by @bellini666 via #4076