2026 release notes

This page contains release notes for Streamlit versions released in 2026. For the latest version of Streamlit, see Release notes.

Version 1.56.0

Release date: March 31, 2026

Highlights

• 🍿 Introducing st.menu_button — a new widget that renders a dropdown button with a customizable popover container for building menus, toolbars, and action lists (#13981, #11409).
• 🎁 Introducing st.iframe — embed external URLs or raw HTML content directly in your app using an iframe (#14433, #12977).
• 🔍 st.selectbox and st.multiselect now support a filter_mode parameter that lets users search and filter options by typing (#14537, #6160, #7238).

Notable Changes

• 📊 st.dataframe supports programmatically setting selections via the selection parameter (#13594, #10128).
• 🎯 st.dataframe has a new "single-row-required" selection mode that always keeps exactly one row selected (#14288, #9253).
• 📐 st.dataframe column configuration now supports an alignment parameter for controlling text alignment in columns (#14333, #12106).
• 👀 The column visibility menu in st.dataframe is now always visible, making it easier to show and hide columns (#14336, #10649).
• 🎹 AudioColumn and VideoColumn are now available in st.column_config for displaying audio and video players directly in dataframes (#14032, #8345).
• 🐍 Streamlit now supports pandas 3.x (#13812, #13211).
• 🧭 st.navigation has a new expanded parameter to control how many sidebar items are visible before collapsing (#14051, #9646).
• 🔗 st.Page now accepts external URLs, allowing you to add links to external sites in the navigation sidebar (#13691, #9025). Thanks, t0k0shi!
• 🖼 st.table has new hide_index and hide_header parameters for cleaner table presentation (#14113, #8235, #9251).
• ⚡ st.link_button now supports an on_click callback that triggers a rerun before navigating (#14116, #7453).
• 📁 st.file_uploader and st.chat_input now accept file type shortcuts like "image", "audio", "video", and "document" (#14140).
• 📏 st.chat_input has a new height parameter to control the initial height of the text area (#14165, #10724).
• ✨ Alert elements (st.info, st.warning, st.error, st.success) now automatically extract a leading Material icon from the message body and display it as the alert icon (#14173, #10892).
• 🪄 Streaming markdown now auto-completes incomplete syntax (e.g., unclosed bold, links, or code blocks) during streaming for a cleaner reading experience (#13939).
• 🏷 st.pills and st.segmented_control now have a required parameter to enforce that at least one option is always selected (#14414, #9870).
• 🔄 st.container has a new autoscroll parameter that automatically scrolls to the bottom as new content is added (#14502, #8836).
• 🧩 st.tabs, st.expander, and st.popover now preserve their open/closed state across reruns (#14332, #14356).
• 🛠 Static files served via st.static/ now use native content types instead of a generic fallback (#14090).
• 🎥 Media elements now support relative static file serving URLs (e.g., /app/static/video.mp4) (#14317, #12104).
• 🧪 st.file_uploader is now supported in AppTest for programmatic testing of file upload flows (#14341, #8093).
• 🔧 Widget state duplication warnings are now logged to the console instead of displayed in the app UI (#14141).
• 📦 BidiComponentResult has been renamed to ComponentResult in the custom components v2 API (#14253).
• ⚙ The _stcore/metrics endpoint is now fully OpenMetrics-compliant (#14538).

Other Changes

• 🐛 Bug fix: Streamlit can now run with Python optimization flags (-O / -OO) (#14171, #14155).
• 🦋 Bug fix: Reduced false-positive file change detections on Windows by adding a stability check to the file watcher (#14174, #13954).
• 🪲 Bug fix: st.text_area with height="content" now correctly auto-sizes to fit content (#14228, #14222).
• 🐜 Bug fix: Stale anchor links are no longer preserved when clearing transient nodes (#14251, #14249).
• 🐝 Bug fix: BidiComponentManager is now properly initialized in AppTest mock runtime (#14301, #14274). Thanks, tysoncung!
• 🐞 Bug fix: Streamlit is now compatible with Python 3.14's PEP 649 deferred annotation evaluation (#14327, #14324).
• 🕷️ Bug fix: Tooltips on selected st.multiselect options are now restored (#14353, #14351).
• 🪳 Bug fix: server.port is now correctly updated after binding to port 0 (#14372, #11308). Thanks, joanaarnauth!
• 🪰 Bug fix: Bound query params are now correctly restored in the URL when navigating in multi-page apps (#14374, #14350).
• 🦠 Bug fix: Restored the reactJsonViewCompat shim for the local dev server (#14391).
• 🦟 Bug fix: st.exception links no longer overflow their container at small viewport widths (#14417, #12870).
• 🦂 Bug fix: Headings inside horizontal containers (st.columns) no longer have extra top padding (#14419, #12434).
• 🦗 Bug fix: Programmatic dataframe selections now return AttributeDictionary for consistent dot-notation access (#14455, #14454).
• 🕸️ Bug fix: Streaming markdown with color directives no longer shows rendering artifacts (#14468, #14460).
• 🐌 Bug fix: The session_duration metric is now OpenMetrics-compliant (#14476, #14432).
• 🦎 Bug fix: The main menu now has a visible border in dark mode (#14529).

Version 1.55.0

Release date: March 3, 2026

Highlights

• 🍿 Introducing dynamic containers: st.tabs, st.popover, and st.expander can rerun the app when they are opened or closed by setting the on_change parameter. If a key is also provided, you can programmatically open and close them, too.
• 🖇️ Announcing widget binding! Most non-trigger widgets have a bind parameter to simplify syncing widget state with query parameters.

Notable Changes

• 🔗 st.image has a link parameter to make images clickable with HTTP/HTTPS URLs (#14139, #9836).
• 🥷 st.Page has a visibility parameter that lets you hide pages in the navigation menu while keeping them routable (#13905, #10738).
• 🎨 Markdown supports arbitrary CSS colors for text foreground and background (#14041, #7808).
• 📐 st.metric has a delta_description parameter to display descriptive text next to delta values (#13848, #13690).
• 📏 You can configure the font weight and size for st.metric with the new metricValueFontWeight and metricValueFontSize configuration options (#13550, #12300). Thanks, kagawa0710!
• 🏓 st.table has height and width parameters (#13850, #10775, #10820).
• 📈 st.altair_chart and st.vega_lite_chart support selections on multi-view charts (#13591, #8643).
• 🔑 To prevent widgets from resetting when you change a parameter, widgets are transitioning to an identity based only on their keys (if provided). The following widgets use only their key for their identity:
  • st.pills
  • st.segmented_control
• 📂 st.markdown accepts width="auto" to adapt its default behavior depending on the flex layout of its container (#13841).
• 🌐 Added a new client.allowedOrigins config option to let you customize which origins can send cross-origin postMessage (#13829, #6389).

Other Changes

• 🖋️ Page titles in st.Page and section labels in st.navigation support Markdown (#14053, #14010, #11771).
• 🧹 Common block elements in widget labels are auto-escaped for convenience (#13887, #7359).
• 🏄‍♂️ st.multiselect lets users select all options or all currently filtered options with a single click (#13795, #4714).
• 💅 Improved the design of st.multiselect and st.selectbox (#13004). Thanks, rishi-kumar0612!
• ‼️ All widget drop-downs were restyled for consistency (#13796, #13797, #13798).
• ↔️ For better accessibility, st.tabs displays navigation arrows when the tabs overflow their container horizontally (#13987, #5552).
• 📝 The app menu was redesigned (#14101):
  • Improved accessibility (#13878, #14131).
  • Added a copy button for the Streamlit version (#13791).
  • Removed the settings menu, surfacing the theme selector and rerun settings in the main menu (#13937, #13988, #14048).
• 🔍 Improved streamlit config show output to better distinguish theme value sources (#13761).
• ♥️ To improve behavior in hosted environments, the Streamlit server acknowledges client heartbeats (#13810).
• 🔣 Extended sprintf to support , as a thousands separator in NumberColumn, ProgressColumn, st.number_input, st.slider, and st.metric (#13284, #1301).
• ⬆️ Added support for cachetools 7.x (#13839, #13801).
• ☠️ Added a deprecation notice to SnowparkConnection for better visibility (#14125).
• 🦀 Bug fix: st.spinner avoids a race condition when used right before a cache miss (#13849, #13634).
• 🦎 Bug fix: st.date_input values are normalized in Session State to prevent a type error (#14123, #14109).
• 🐌 Bug fix: st.metric with sparklines display correctly in horizontal flex containers (#14110, #13785).
• 🕸️ Bug fix: SQLConnection.query() caches results at the instance level instead of the class level (#14094, #14077).
• 🦗 Bug fix: st.segmented_control has consistent border styling on hover (#14067, #12802).
• 🦂 Bug fix: st.date_input and st.datetime_input remove validation marks when they are cleared (#14066, #14052).
• 🦟 Bug fix: Fixed a rendering regression for vconcat charts in Altair with faceted children (#14065, #14050).
• 🦠 Bug fix: st.Page raised an exception if it's passed a URL path of only slashes (#14005, #13952). Thanks, nileshhadalgi016!
• 🪰 Bug fix: The code block copy button was moved into a toolbar to prevent text overlap (#14024, #12958).
• 🪳 Bug fix: st.tabs retain their state when rendered after a transitional element like st.spinner (#14023, #14018).
• 🕷️ Bug fix: Treemap and sunburst Plotly charts support selections (#13935, #9001).
• 🐞 Bug fix: Fixed a width regression for layered vconcat charts in Altair (#13980, #13974).
• 🐝 Bug fix: st.multiselect raises an exception when max_selections isn't positive (#13966, #13965).
• 🐜 Bug fix: When a user adds a row to st.data_editor, all columns, including hidden ones, are initialized (#13916, #13915).
• 🪲 Bug fix: st.select_slider doesn't apply its format function twice in AppTest (#13837, #13832).
• 🐛 Bug fix: Content in collapsed expanders is not included in page search (#13818).

Version 1.54.0

Release date: February 4, 2026

Notable Changes

• 🎨 The color parameter of st.area_chart, st.bar_chart, st.line_chart, and st.scatter_chart supports the basic color palette which can be configured with theming (#13739, #12694).
• ☯️ You can use the new theme.chartDivergingColors to set default diverging colors for Plotly, Altair, and Vega-Lite charts.
• 🔗 You can configure the display of error help links with a new configuration option, client.showErrorLinks (#13472, #11238). Thanks, karubian!
• 😃 st.logo supports Material icons and emojis (#13416). Thanks, rahuld109!
• 🥷 To prevent widgets from resetting when you change a parameter, widgets are transitioning to an identity based only on their keys (if provided). The following widgets use only their key for their identity:
  • st.dataframe (with selections)
  • st.area_chart
  • st.bar_chart
  • st.line_chart
  • st.scatter_chart
  • st.altair_chart
  • st.vegalite_chart
  • st.pydeck_chart
  • st.date_input
  • st.datetime_input
  • st.radio
  • st.select_slider
• 👆 ListColumn and MultiselectColumn let users select the text of their pills for copying (#13663).
• 👻 st.experimental_get_query_params and st.experimental_set_query_params have been removed. Use st.query_params instead.
• ☠️ st.experimental_user has been removed. Use st.user instead.

Other Changes

• 👽 The warning about the proposed removal of .add_rows() shows in the browser. Please leave feedback (#13063).
• 🦎 When a .streamlit/config.toml file is created after a Streamlit app is running, the file watcher will recognize it without restarting the Streamlit server (#13625, #11296).
• 🔐 Bug fix: Path security validation improves protection against Server-Side Request Forgery (SSRF) and path traversal vulnerabilities (#13733).
• 🕸️ Bug fix: Wildcard URLs display as localhost in the browser URL and console output (#13720, #13712).
• 🦗 Bug fix: Modals and drop-down menus don't collapse the sidebar (#13653).
• 🦂 Bug fix: st.bar_chart doesn't raise a KeyError when sorting melted data (#13695).
• 🦟 Bug fix: st.multiselect and st.selectbox don't clear state when a custom class object is selected (#13648, #13646).
• 🦠 Bug fix: Transient nodes used for spinners will correctly anchor themselves in the Streamlit DOM to avoid an empty delta path (#13674).
• 🪰 Bug fix: Snowflake connections will re-initialize if closed (#13665).
• 🪳 Bug fix: Nested containers under a spinner don't raise a Bad delta path index error (#13659, #13658).
• 🕷️ Bug fix: SnowflakeConnection.query() correctly passes the params argument to caching (#13652, #13644).
• 🐞 Bug fix: client.toolbarMode="viewer" correctly hides developer options from the settings menu (#13623).
• 🐝 Bug fix: When using the experimental Starlette configuration, Streamlit auth can log users out of your identity provider and surface user tokens, consistent with recent updates (#13571).
• 🐜 Bug fix: Streamlit will defensively not load packaged components with missing or invalid component names in their manifests (#13612).
• 🪲 Bug fix: The width of file chips in st.chat_input was increased to reduce filename truncation (#13589).
• 🐛 Bug fix: st.bar_chart doesn't raise an error about y-axis minimum and maximum when the bars have all the same value (#13590, #13584).

Version 1.53.0

Release date: January 14, 2026

Highlights

• ❄️ You can create session-scoped caller's rights connections in Streamlit in Snowflake and other Snowpark Container Services environments.
• ⭐ Announcing experimental support for running Streamlit with Starlette with the new server.useStarlette configuration option.
• 🌐 Introducing st.App, an experimental ASGI-compatible entry point that enables custom HTTP routes, middleware, lifecycle hooks, and integration with Python web frameworks like FastAPI and Starlette (#13537).
• 🔑 You can expose OIDC ID and access tokens in st.user.tokens (#12044). Thanks, velochy!

Notable Changes

• 🚪 st.logout logs users out of your identity provider, if supported by your OIDC setup (#12693). Thanks, velochy!
• 🌀 To prevent unwanted stale elements, especially in chat layouts, Streamlit treats spinners as transient elements and doesn't include them in the element refresh that happens with reruns (#12826, #9239, #10199, #13166).
• 🧩 For custom components v2, style isolation is set in st.components.v2.component instead of when an instance is mounted (#13518).
• 🎨 To access heading font size and weights in custom components without using JavaScript to parse an array, CSS custom properties in an app include individual properties for each heading font size and weight (#13268).
• ✂️ For custom components v2, html, js, and css are all fully optional (#13511).
• 🔗 BaseConnection has a new class method to scope connections globally or by session (#13506).
• 💾 st.cache_data and st.cache_resource can be scoped to a session (#13482, #6703).
• 🧹 st.cache_resource has a new parameter on_release to use to clean up resources, like closing connections (#13439, #8674).
• 🏷️ st.multiselect doesn't include options in widget identity when a key is provided (#13448, #7855).
• 🔢 st.number_input doesn't include min and max in widget identity when a key is provided (#13512, #11277).
• 📋 st.selectbox doesn't include options in widget identity when a key is provided (#13383, #6352, #8496, #4854).
• 🎚️ You can format values for st.slider with a new format parameter (#13392, #13243).
• 🖼️ st.dialog has a new icon parameter to add an icon next to the dialog title (#13244, #13202). Thanks, KaranPradhan266!
• ✏️ You can configure st.data_editor to allow only adding or only deleting rows (#13228, #7091).
• ➡️ You can display a button icon on the right instead of the left with a new icon_position parameter (#13150, #13069). Thanks, SiddhantSadangi!
• ↔️ st.columns, st.container, and st.space support larger and smaller gap and size values (#13345).
• 📦 You can configure the maximum file size for st.file_uploader and st.chat_input with a new parameter that overrides the server.maxUploadSize configuration option (#12816, #12692, #12579). Thanks, rishabhjain1712!
• 📐 You can configure the default width of the sidebar with st.set_page_config (#12154, #11980). Thanks, jose-mindwayai!
• 📝 The options parameter in st.select_slider supports Markdown (#12960, #11774). Thanks, jensonjohnathon!
• 📊 The delta and value parameters in st.metric support Markdown (#13094, #11773). Thanks, jensonjohnathon!
• 🔣 You can configure number format in st.metric (#13193, #12229, #6951).
• 🌈 You can set the color of st.metric delta indicators from the basic color palette (#13153, #4052, #6665).

Other Changes

• 🔌 You can exclude the port from your Streamlit auth redirect URI to use the current port (#12251, #12249). Thanks, velochy!
• 📛 Various custom components v2 types were semantically renamed (#13515).
• 📜 When an item is removed from st.multiselect, the scroll position of the drop down is preserved (#13384, #13317). Thanks, kagawa0710!
• 🐍 Pydantic sequences are treated as dataframe-like by Streamlit commands (#13348, #13344).
• 🏠 The logo displayed by st.logo links to the app's homepage (#13222, #13155).
• ⌨️ For improved accessibility, tooltips are keyboard focusable (#13379, #13330).
• ⚓ For improved accessibility, anchor links are keyboard focusable (#13378, #13329).
• 🗺️ st.json displays a tooltip on hover for each element to show its full path (#13113, #13057).
• 💬 st.chat_input was redesigned for improved style and accessibility (#13088, #13223, #13364, #13532, #13556, #13546, #13542, #13535, #13554, #13553, #13555, #13547).
• 💅 Various style updates for consistency (#13536, #13557).
• 🔐 st.auth is compatible with Authlib version 1.6.6 (#13333, #13335, #13424).
• 👽 Bug fix: Embedded apps respect the theme embedding option when they are configured with a custom theme (#13498, #13496). Thanks, ranmocy!
• 👻 Bug fix: st.number_input accounts for floating point precision when incrementing and decrementing its value (#13484).
• 🦀 Bug fix: st.altair_chart correctly displays HConcat and VConcat charts (#13423, #13410).
• 🦋 Bug fix: st.selectbox is initialized correctly when its value is set from Session State (#13438, #13435).
• 🦎 Bug fix: st.html indents list items correctly (#13437, #13426).
• 🐌 Bug fix: A logger message for SnowflakeConnection references the correct URL to the Snowflake docs (#13363, #13361).
• 🕸️ Bug fix: Tooltip text with newlines renders correctly (#13365, #13339).
• 🦗 Bug fix: The DOM elements within st.spinner are properly aligned when showing elapsed time (#13388, #13387).
• 🦂 Bug fix: Custom components v2 have the same cross-origin behavior as other elements in the app (#13376).
• 🦟 Bug fix: CSS custom properties in custom components handle null or unset values correctly (#13240).
• 🦠 Bug fix: Theme preference is persisted into new app sessions (#13306, #13280).
• 🪰 Bug fix: st.dialog doesn't show stale elements from a previous dialog (#13297, #10907).
• 🪳 Bug fix: st.data_editor behaves correctly when starting with a column of None values (#13309, #13305).
• 🕷️ Bug fix: To correctly reflect edits to the theme configuration during development, theme settings are properly hashed (#13173).
• 🐞 Bug fix: In v2 custom components, app-level keyboard shortcuts (like R for rerun) are disabled in typing contexts to prevent unintentional usage (#13264).
• 🐝 Bug fix: Custom component v2 includes default values in component identity, unless a key is provided (#13266).
• 🐜 Bug fix: The sidebar navigation is correctly hidden when topbar navigation is used (#13227, #13224).
• 🪲 Bug fix: st.logo displays the logo correctly when an app uses top navigation (#13226, #13225).
• 🐛 Bug fix: Error messages are clearer when width or height are invalidly set to 0 (#13206, #12868).

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