diff --git a/MANIFEST.in b/MANIFEST.in
index 2b4c542c6..f9dba545c 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -4,4 +4,5 @@ include LICENSE
 include CHANGES.md
 include requirements.txt
 include requirements_dev.txt
+include altair/py.typed
 recursive-include altair *.py *.json *.ipynb *.html
diff --git a/altair/__init__.py b/altair/__init__.py
index 9251c8504..e7a499e18 100644
--- a/altair/__init__.py
+++ b/altair/__init__.py
@@ -585,7 +585,601 @@ def __dir__():
     return __all__
 
 
-from .vegalite import *
+from .vegalite import (
+    Aggregate,
+    AggregateOp,
+    AggregateTransform,
+    AggregatedFieldDef,
+    Align,
+    AllSortString,
+    Angle,
+    AngleDatum,
+    AngleValue,
+    AnyMark,
+    AnyMarkConfig,
+    AreaConfig,
+    ArgmaxDef,
+    ArgminDef,
+    AutoSizeParams,
+    AutosizeType,
+    Axis,
+    AxisConfig,
+    AxisOrient,
+    AxisResolveMap,
+    BarConfig,
+    BaseTitleNoValueRefs,
+    Baseline,
+    Bin,
+    BinExtent,
+    BinParams,
+    BinTransform,
+    BindCheckbox,
+    BindDirect,
+    BindInput,
+    BindRadioSelect,
+    BindRange,
+    Binding,
+    Blend,
+    BoxPlot,
+    BoxPlotConfig,
+    BoxPlotDef,
+    BrushConfig,
+    CalculateTransform,
+    Categorical,
+    Chart,
+    Color,
+    ColorDatum,
+    ColorDef,
+    ColorName,
+    ColorScheme,
+    ColorValue,
+    Column,
+    CompositeMark,
+    CompositeMarkDef,
+    CompositionConfig,
+    ConcatChart,
+    ConcatSpecGenericSpec,
+    ConditionalAxisColor,
+    ConditionalAxisLabelAlign,
+    ConditionalAxisLabelBaseline,
+    ConditionalAxisLabelFontStyle,
+    ConditionalAxisLabelFontWeight,
+    ConditionalAxisNumber,
+    ConditionalAxisNumberArray,
+    ConditionalAxisPropertyAlignnull,
+    ConditionalAxisPropertyColornull,
+    ConditionalAxisPropertyFontStylenull,
+    ConditionalAxisPropertyFontWeightnull,
+    ConditionalAxisPropertyTextBaselinenull,
+    ConditionalAxisPropertynumberArraynull,
+    ConditionalAxisPropertynumbernull,
+    ConditionalAxisPropertystringnull,
+    ConditionalAxisString,
+    ConditionalMarkPropFieldOrDatumDef,
+    ConditionalMarkPropFieldOrDatumDefTypeForShape,
+    ConditionalParameterMarkPropFieldOrDatumDef,
+    ConditionalParameterMarkPropFieldOrDatumDefTypeForShape,
+    ConditionalParameterStringFieldDef,
+    ConditionalParameterValueDefGradientstringnullExprRef,
+    ConditionalParameterValueDefTextExprRef,
+    ConditionalParameterValueDefnumber,
+    ConditionalParameterValueDefnumberArrayExprRef,
+    ConditionalParameterValueDefnumberExprRef,
+    ConditionalParameterValueDefstringExprRef,
+    ConditionalParameterValueDefstringnullExprRef,
+    ConditionalPredicateMarkPropFieldOrDatumDef,
+    ConditionalPredicateMarkPropFieldOrDatumDefTypeForShape,
+    ConditionalPredicateStringFieldDef,
+    ConditionalPredicateValueDefAlignnullExprRef,
+    ConditionalPredicateValueDefColornullExprRef,
+    ConditionalPredicateValueDefFontStylenullExprRef,
+    ConditionalPredicateValueDefFontWeightnullExprRef,
+    ConditionalPredicateValueDefGradientstringnullExprRef,
+    ConditionalPredicateValueDefTextBaselinenullExprRef,
+    ConditionalPredicateValueDefTextExprRef,
+    ConditionalPredicateValueDefnumber,
+    ConditionalPredicateValueDefnumberArrayExprRef,
+    ConditionalPredicateValueDefnumberArraynullExprRef,
+    ConditionalPredicateValueDefnumberExprRef,
+    ConditionalPredicateValueDefnumbernullExprRef,
+    ConditionalPredicateValueDefstringExprRef,
+    ConditionalPredicateValueDefstringnullExprRef,
+    ConditionalStringFieldDef,
+    ConditionalValueDefGradientstringnullExprRef,
+    ConditionalValueDefTextExprRef,
+    ConditionalValueDefnumber,
+    ConditionalValueDefnumberArrayExprRef,
+    ConditionalValueDefnumberExprRef,
+    ConditionalValueDefstringExprRef,
+    ConditionalValueDefstringnullExprRef,
+    Config,
+    CsvDataFormat,
+    Cursor,
+    Cyclical,
+    Data,
+    DataFormat,
+    DataSource,
+    Datasets,
+    DateTime,
+    DatumChannelMixin,
+    DatumDef,
+    Day,
+    DensityTransform,
+    DerivedStream,
+    Description,
+    DescriptionValue,
+    Detail,
+    Dict,
+    DictInlineDataset,
+    DictSelectionInit,
+    DictSelectionInitInterval,
+    Diverging,
+    DomainUnionWith,
+    DsvDataFormat,
+    Element,
+    Encoding,
+    EncodingSortField,
+    ErrorBand,
+    ErrorBandConfig,
+    ErrorBandDef,
+    ErrorBar,
+    ErrorBarConfig,
+    ErrorBarDef,
+    ErrorBarExtent,
+    EventStream,
+    EventType,
+    Expr,
+    ExprRef,
+    Facet,
+    FacetChart,
+    FacetEncodingFieldDef,
+    FacetFieldDef,
+    FacetMapping,
+    FacetSpec,
+    FacetedEncoding,
+    FacetedUnitSpec,
+    Field,
+    FieldChannelMixin,
+    FieldDefWithoutScale,
+    FieldEqualPredicate,
+    FieldGTEPredicate,
+    FieldGTPredicate,
+    FieldLTEPredicate,
+    FieldLTPredicate,
+    FieldName,
+    FieldOneOfPredicate,
+    FieldOrDatumDefWithConditionDatumDefGradientstringnull,
+    FieldOrDatumDefWithConditionDatumDefnumber,
+    FieldOrDatumDefWithConditionDatumDefnumberArray,
+    FieldOrDatumDefWithConditionDatumDefstringnull,
+    FieldOrDatumDefWithConditionMarkPropFieldDefGradientstringnull,
+    FieldOrDatumDefWithConditionMarkPropFieldDefTypeForShapestringnull,
+    FieldOrDatumDefWithConditionMarkPropFieldDefnumber,
+    FieldOrDatumDefWithConditionMarkPropFieldDefnumberArray,
+    FieldOrDatumDefWithConditionStringDatumDefText,
+    FieldOrDatumDefWithConditionStringFieldDefText,
+    FieldOrDatumDefWithConditionStringFieldDefstring,
+    FieldRange,
+    FieldRangePredicate,
+    FieldValidPredicate,
+    Fill,
+    FillDatum,
+    FillOpacity,
+    FillOpacityDatum,
+    FillOpacityValue,
+    FillValue,
+    FilterTransform,
+    Fit,
+    FlattenTransform,
+    FoldTransform,
+    FontStyle,
+    FontWeight,
+    Generator,
+    GenericUnitSpecEncodingAnyMark,
+    GeoJsonFeature,
+    GeoJsonFeatureCollection,
+    Gradient,
+    GradientStop,
+    GraticuleGenerator,
+    GraticuleParams,
+    HConcatChart,
+    HConcatSpecGenericSpec,
+    Header,
+    HeaderConfig,
+    HexColor,
+    Href,
+    HrefValue,
+    Impute,
+    ImputeMethod,
+    ImputeParams,
+    ImputeSequence,
+    ImputeTransform,
+    InlineData,
+    InlineDataset,
+    Interpolate,
+    IntervalSelectionConfig,
+    IntervalSelectionConfigWithoutType,
+    JoinAggregateFieldDef,
+    JoinAggregateTransform,
+    JsonDataFormat,
+    Key,
+    LabelOverlap,
+    LatLongDef,
+    LatLongFieldDef,
+    Latitude,
+    Latitude2,
+    Latitude2Datum,
+    Latitude2Value,
+    LatitudeDatum,
+    LayerChart,
+    LayerRepeatMapping,
+    LayerRepeatSpec,
+    LayerSpec,
+    LayoutAlign,
+    Legend,
+    LegendBinding,
+    LegendConfig,
+    LegendOrient,
+    LegendResolveMap,
+    LegendStreamBinding,
+    LineConfig,
+    LinearGradient,
+    LocalMultiTimeUnit,
+    LocalSingleTimeUnit,
+    Locale,
+    LoessTransform,
+    LogicalAndPredicate,
+    LogicalNotPredicate,
+    LogicalOrPredicate,
+    Longitude,
+    Longitude2,
+    Longitude2Datum,
+    Longitude2Value,
+    LongitudeDatum,
+    LookupData,
+    LookupSelection,
+    LookupTransform,
+    Mark,
+    MarkConfig,
+    MarkDef,
+    MarkPropDefGradientstringnull,
+    MarkPropDefnumber,
+    MarkPropDefnumberArray,
+    MarkPropDefstringnullTypeForShape,
+    MarkType,
+    MaxRowsError,
+    MergedStream,
+    Month,
+    MultiTimeUnit,
+    NamedData,
+    NonArgAggregateOp,
+    NonLayerRepeatSpec,
+    NonNormalizedSpec,
+    NumberLocale,
+    NumericArrayMarkPropDef,
+    NumericMarkPropDef,
+    OffsetDef,
+    Opacity,
+    OpacityDatum,
+    OpacityValue,
+    Order,
+    OrderFieldDef,
+    OrderValue,
+    OrderValueDef,
+    Orient,
+    Orientation,
+    OverlayMarkDef,
+    Padding,
+    Parameter,
+    ParameterExpression,
+    ParameterExtent,
+    ParameterName,
+    ParameterPredicate,
+    Parse,
+    ParseValue,
+    PivotTransform,
+    PointSelectionConfig,
+    PointSelectionConfigWithoutType,
+    PolarDef,
+    Position2Def,
+    PositionDatumDef,
+    PositionDatumDefBase,
+    PositionDef,
+    PositionFieldDef,
+    PositionFieldDefBase,
+    PositionValueDef,
+    Predicate,
+    PredicateComposition,
+    PrimitiveValue,
+    Projection,
+    ProjectionConfig,
+    ProjectionType,
+    QuantileTransform,
+    RadialGradient,
+    Radius,
+    Radius2,
+    Radius2Datum,
+    Radius2Value,
+    RadiusDatum,
+    RadiusValue,
+    RangeConfig,
+    RangeEnum,
+    RangeRaw,
+    RangeRawArray,
+    RangeScheme,
+    RectConfig,
+    RegressionTransform,
+    RelativeBandSize,
+    RepeatChart,
+    RepeatMapping,
+    RepeatRef,
+    RepeatSpec,
+    Resolve,
+    ResolveMode,
+    Root,
+    Row,
+    RowColLayoutAlign,
+    RowColboolean,
+    RowColnumber,
+    RowColumnEncodingFieldDef,
+    SCHEMA_URL,
+    SCHEMA_VERSION,
+    SampleTransform,
+    Scale,
+    ScaleBinParams,
+    ScaleBins,
+    ScaleConfig,
+    ScaleDatumDef,
+    ScaleFieldDef,
+    ScaleInterpolateEnum,
+    ScaleInterpolateParams,
+    ScaleResolveMap,
+    ScaleType,
+    SchemaBase,
+    SchemeParams,
+    SecondaryFieldDef,
+    SelectionConfig,
+    SelectionExpression,
+    SelectionInit,
+    SelectionInitInterval,
+    SelectionInitIntervalMapping,
+    SelectionInitMapping,
+    SelectionParameter,
+    SelectionPredicateComposition,
+    SelectionResolution,
+    SelectionType,
+    SequenceGenerator,
+    SequenceParams,
+    SequentialMultiHue,
+    SequentialSingleHue,
+    Shape,
+    ShapeDatum,
+    ShapeDef,
+    ShapeValue,
+    SharedEncoding,
+    SingleDefUnitChannel,
+    SingleTimeUnit,
+    Size,
+    SizeDatum,
+    SizeValue,
+    Sort,
+    SortArray,
+    SortByChannel,
+    SortByChannelDesc,
+    SortByEncoding,
+    SortField,
+    SortOrder,
+    Spec,
+    SphereGenerator,
+    StackOffset,
+    StackTransform,
+    StandardType,
+    Step,
+    StepFor,
+    Stream,
+    StringFieldDef,
+    StringFieldDefWithCondition,
+    StringValueDefWithCondition,
+    Stroke,
+    StrokeCap,
+    StrokeDash,
+    StrokeDashDatum,
+    StrokeDashValue,
+    StrokeDatum,
+    StrokeJoin,
+    StrokeOpacity,
+    StrokeOpacityDatum,
+    StrokeOpacityValue,
+    StrokeValue,
+    StrokeWidth,
+    StrokeWidthDatum,
+    StrokeWidthValue,
+    StyleConfigIndex,
+    SymbolShape,
+    TOPLEVEL_ONLY_KEYS,
+    Text,
+    TextBaseline,
+    TextDatum,
+    TextDef,
+    TextDirection,
+    TextValue,
+    Theta,
+    Theta2,
+    Theta2Datum,
+    Theta2Value,
+    ThetaDatum,
+    ThetaValue,
+    TickConfig,
+    TickCount,
+    TimeInterval,
+    TimeIntervalStep,
+    TimeLocale,
+    TimeUnit,
+    TimeUnitParams,
+    TimeUnitTransform,
+    Title,
+    TitleAnchor,
+    TitleConfig,
+    TitleFrame,
+    TitleOrient,
+    TitleParams,
+    Tooltip,
+    TooltipContent,
+    TooltipValue,
+    TopLevelConcatSpec,
+    TopLevelFacetSpec,
+    TopLevelHConcatSpec,
+    TopLevelLayerSpec,
+    TopLevelMixin,
+    TopLevelParameter,
+    TopLevelRepeatSpec,
+    TopLevelSelectionParameter,
+    TopLevelSpec,
+    TopLevelUnitSpec,
+    TopLevelVConcatSpec,
+    TopoDataFormat,
+    Transform,
+    Type,
+    TypeForShape,
+    TypeVar,
+    TypedFieldDef,
+    URI,
+    Undefined,
+    UnitSpec,
+    UnitSpecWithFrame,
+    Url,
+    UrlData,
+    UrlValue,
+    UtcMultiTimeUnit,
+    UtcSingleTimeUnit,
+    VConcatChart,
+    VConcatSpecGenericSpec,
+    VEGAEMBED_VERSION,
+    VEGALITE_VERSION,
+    VEGA_VERSION,
+    ValueChannelMixin,
+    ValueDefWithConditionMarkPropFieldOrDatumDefGradientstringnull,
+    ValueDefWithConditionMarkPropFieldOrDatumDefTypeForShapestringnull,
+    ValueDefWithConditionMarkPropFieldOrDatumDefnumber,
+    ValueDefWithConditionMarkPropFieldOrDatumDefnumberArray,
+    ValueDefWithConditionMarkPropFieldOrDatumDefstringnull,
+    ValueDefWithConditionStringFieldDefText,
+    ValueDefnumber,
+    ValueDefnumberwidthheightExprRef,
+    VariableParameter,
+    Vector10string,
+    Vector12string,
+    Vector2DateTime,
+    Vector2Vector2number,
+    Vector2boolean,
+    Vector2number,
+    Vector2string,
+    Vector3number,
+    Vector7string,
+    VegaLite,
+    VegaLiteSchema,
+    ViewBackground,
+    ViewConfig,
+    WindowEventType,
+    WindowFieldDef,
+    WindowOnlyOp,
+    WindowTransform,
+    X,
+    X2,
+    X2Datum,
+    X2Value,
+    XDatum,
+    XError,
+    XError2,
+    XError2Value,
+    XErrorValue,
+    XOffset,
+    XOffsetDatum,
+    XOffsetValue,
+    XValue,
+    Y,
+    Y2,
+    Y2Datum,
+    Y2Value,
+    YDatum,
+    YError,
+    YError2,
+    YError2Value,
+    YErrorValue,
+    YOffset,
+    YOffsetDatum,
+    YOffsetValue,
+    YValue,
+    __builtins__,
+    __cached__,
+    __doc__,
+    __file__,
+    __loader__,
+    __name__,
+    __package__,
+    __path__,
+    __spec__,
+    api,
+    binding,
+    binding_checkbox,
+    binding_radio,
+    binding_range,
+    binding_select,
+    channels,
+    check_fields_and_encodings,
+    concat,
+    condition,
+    core,
+    curry,
+    data,
+    data_transformers,
+    datum,
+    default_data_transformer,
+    display,
+    expr,
+    graticule,
+    hashlib,
+    hconcat,
+    io,
+    itertools,
+    json,
+    jsonschema,
+    layer,
+    limit_rows,
+    list_datasets,
+    load_dataset,
+    load_schema,
+    mixins,
+    overload,
+    param,
+    parse_shorthand,
+    pd,
+    pipe,
+    pkgutil,
+    renderers,
+    repeat,
+    sample,
+    schema,
+    selection,
+    selection_interval,
+    selection_multi,
+    selection_point,
+    selection_single,
+    sequence,
+    sphere,
+    theme,
+    themes,
+    to_csv,
+    to_json,
+    to_values,
+    topo_feature,
+    utils,
+    v5,
+    value,
+    vconcat,
+    warnings,
+    with_property_setters,
+)
 
 
 def load_ipython_extension(ipython):
diff --git a/altair/py.typed b/altair/py.typed
new file mode 100644
index 000000000..e69de29bb