bokeh

3.10.0

Bokeh version 3.10.0 (May 2026) is a minor milestone of Bokeh project.

• Added WebGL rendering support for Patch and Patches glyphs (14853)

• Added LightDark component to switch between light and dark themes (14807)

• Removed PNG icon related CSS and simplified icons' CSS (14579)

• Dropped support for Python 3.10 (14865)

• Dropped support for Python 3.11 (15174)

• Added perform_error_diagnostics settings flag (14947)

• Redesigned BokehJS' build system to use TypeScript native (tsgo) compiler (14812)

• Redesigned views' internals and components to use virtual DOM (14829)

• Support LightDark component auto/system option and add tri-state handling to toggle like components (14915)

• Make it easier to theme Tooltip component and migrate it to vDOM (14955)

• Fix broken inverted color mapping when using LogColorMapper (15035)

• Simplified CustomJS construction with template strings (Python 3.14+) (14977)

• Added Playwright as an alternative export backend for PNG and SVG (14940)

• Redesigned Tabs as vDOM, added keyboard navigation and improved accessibility (15168)

• Migrated UI components to use adopted CSS stylesheets (14973)

• Fix broken support for DateFormatter in tables when the format "TIMESTAMP" is selected (15221)

• Add NonNegative type for num_minor_ticks and desired_num_ticks on ContinuousTicker (15227)

3.9.0

Bokeh version 3.9.0 (March 2026) is a minor milestone of Bokeh project.

• Added support for ARIA role attribute to Switch component (14341)

• Initial support for the new CSS variable based color system for theming (14467, 14695)

• Redesigned typing declaration of Bokeh's models and properties fixing various regressions (14798)

• Added support for dataclass as input to ColumnDataSource (14677)

• Added figure methods to plot geographic features using Cartopy (14706)

• Added text_outline_width to models already supporting text_outline_color (14733, 14746)

• Removed pandas as a required dependency (14686)

• Added pad_before and pad_after properties to Step glyph (14758)

• Fixed issue where Block glyph did not render correctly with reversed axes (14750)

• Fixed issue where CategoricalSlider displayed "undefined" in the tooltip (14774)

• Added support for Markdown formatted contents display with Markdown widget (14780)

• Added support for binary protocol to all server messages types (14725)

• Fixed a bug that caused manually positioned plot axes to shift position of toolbars (14840)

• Fixed initial render ignoring explicit bounds on FactorRange (14849)

• Enhanced bokeh settings command with verbose mode, fuzzy matching, etc. (14619)

• Added support for dash and hatch pattern visuals to CSS oriented components on the canvas (14755, 14761)

• Fixed support for reversed axes in Block glyph (14751)

• Added initial support for allowing virtual DOM with Preact in bokehjs' components (14760)

• Started modernizing and simplifying bokehjs' build system (14788, 14785)

• Allowed to disabled layout linking in Tabs and made this the default behavior (14823)

• Added padding properties to Step glyph (14743)

• Enhance performance related to large datasets (14718, 14722, 14794, 14796, 14803, 14825, 14827)

• Reduced compression level of binary data to improve performance (14883)

• Added support for Pandas 3 (14809, 14832, 14877)

• Added support for Python 3.14 (14663)

3.8.2

Bokeh version 3.8.2 (January 2026) is a patch release that fixes a security issue with the Bokeh server.

Changes

• Addressed a security issue with Incomplete Origin Validation for WebSockets in Bokeh server applications

3.8.1

Bokeh version 3.8.1 (November 2025) is a patch release that fixes a number of minor bugs/regressions and documentation issues.

Changes

• Restored support for @$name and improved replace_placeholders() (14652)

• Regression fixes to documentation build, especially on Windows (14627, 14625)

3.8.0

Bokeh version 3.8.0 (August 2025) is a minor milestone of Bokeh project.

• Added support for filters, sorters and limits to HoverTool (14484)

• Added support for session reconnect, connection events and UI notifications (14201, 14576)

• Added support for Plot side panel layouts and SizeBar annotation (14487)

• Added support for document configuration (Document.config) (14608)

• Added support for legend_name argument to glyph APIs for easier legend management (14325)

• Added support for compression of buffers in Bokeh's serialization protocol (14485)

• Converted PNG icons to SVG and generally refreshed existing icons (14518, 14563, 14577)

• Added preliminary support for theming using CSS variables (14349)

• Various performance improvements in BokehJS (14556, 14428, 14419)

• Upgraded bokehjs build system to TypeScript 5.9 (14589)

3.7.3

Bokeh version 3.7.3 (May 2025) is a patch release that fixes a number of minor bugs/regressions and documentation issues.

Changes

• Fixed Legend's rendering when scaling or on high DPI displays (14443)

• Fixed Legend's inactive visuals in CSS mode (14454)

• Fixed Legend's positioning in side panels (14457)

• Allowed to update child views without removing their elements (14459)

• Updated DatetimeTickFormatter's documentation (14452)

• Fixed CodePen template in the documentation (14471)

• Fixed type declarations of Figure's properties (14401)

• Improved corner case handling in datetime formatter (14473)

3.7.2

Bokeh version 3.7.2 (March 2025) is a patch release that fixes a number of minor bugs/regressions and documentation issues.

Changes

• Fixed a regression in application of layout styles during updates (14437)

3.7.1

Bokeh version 3.7.1 (March 2025) is a patch release that fixes a number of minor bugs/regressions and documentation issues.

Changes

• Fixed a regression in detaching models from a document in bokehjs (14430)

• Fixed rendering of empty Patches glyph (14436)

• Improved performance of scatter plots using WebGL backend (14421)

• Improved quality of examples (14397, 14395)

3.7.0

Bokeh version 3.7.0 (March 2025) is a minor milestone of Bokeh project.

• Added support for auto-ranging based on the current visible viewport (14353)

• Improved PanTool's cursor and state management handling (14106)

• Improved handling of touch-action based on active tools and their supported events (14109)

• Allowed CrosshairTool and HoverTool to trigger from axes (14124)

• Added support for dual canvas and DOM rendering to Legend annotation (14028)

• Added support for custom marker definitions to Scatter glyph (14165)

• Added support for stateful action tools, especially CustomAction (14143)

• Enhanced default DatetimeTickFormatter by providing additional context (13854)

• Added preliminary support for type declaration files (*.pyi) in bokeh.models (13900)

• Added preliminary type declarations to figure() and its glyph methods (14269, 14289)

• Added support for tool context menus on plots and figures (by default) (14228)

• Added support for label and on/off icons to Switch widget (14294)

• Added support for tool grouping in figure() or Plot toolbar (14259)

• Added support for hatch visuals everywhere fill visuals are supported (14311)

• Fixed tool button visibility handling in Toolbar (14251)

• Fixed image hover on log scales (14306)

• Added support for html_id and html_attributes properties to UI components (14357)

• Added support for value formatting to ValueOf(obj, attr) (14358)

• Added support for Drawer floating component (14081)

• Added support for determinate and indeterminate Progress widgets (13546)

• Improved cursor handling in editable/movable BoxAnnotation (14151)

• Changed type of ImageURLTexture.url from String to Image (14371)

• Added support for automatic activation of WheelZoomTool on focus (14112)

3.6.3

Bokeh version 3.6.3 (January 2025) is a patch release that fixes a long-standing performance issue for data tables, and number of other minor bugs/regressions and documentation issues.

Changes

• Fixed serious data table sort performance bug (14262)

• Fixed visual bug with math text used in titles (14202)

• Fixed issues with CSS color formats in SVG exports causing problems for other applications (14264)