Release notes

This page lists highlights, bug fixes, and known issues for the latest release of Streamlit. If you're looking for information about nightly releases or experimental features, see Pre-release features.

Upgrade Streamlit

pip install --upgrade streamlit

Version 1.55.0 (latest)

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).

Older versions of Streamlit

• 2025 release notes
• 2024 release notes
• 2023 release notes
• 2022 release notes
• 2021 release notes
• 2020 release notes
• 2019 release notes