Firefox 156
156.0.1
Release notes ↗
Is Firefox 156 still supported?
No
Firefox 156 reached end of life on Sep 29, 2026 (1 week ago). It no longer gets updates, including security fixes. Upgrade to Firefox 157 (latest 157.0.1).
- Released
- Sep 15, 2026
- End of life
- Sep 29, 2026
1 week ago - Latest version
- 156.0.1
Sep 22, 2026
Upgrade path
The recommended upgrade is Firefox 157, currently at 157.0.1.
Quick answers
- Is Firefox 156 still supported?
- No. Firefox 156 reached end of life on Sep 29, 2026 (1 week ago). It no longer gets updates, including security fixes. Upgrade to Firefox 157 (latest 157.0.1).
- When is Firefox 156 end of life?
- Firefox 156 reached end of life on Sep 29, 2026. It gets no more updates, including security fixes.
- What is the latest version of Firefox 156?
- The latest Firefox 156 release is 156.0.1, released on Sep 22, 2026.
- When was Firefox 156 released?
- Firefox 156 was released on Sep 15, 2026.
- What should I upgrade Firefox 156 to?
- The recommended upgrade is Firefox 157, currently at 157.0.1.
- How do I check which Firefox version I have?
- Run
firefox --version, then paste the result into the “Am I up to date?” box on this page.
Other Firefox branches
All 58 →Firefox 156 release history
RSS- 156.0.1
- 156.0
The history fills in as new versions come out.
Keep track
People who run Firefox 156 also check
Official release policy · Checked 2 hours ago