diff --git a/qutebrowser/browser/webengine/webenginesettings.py b/qutebrowser/browser/webengine/webenginesettings.py
index 49de5aa23..4753e3ccd 100644
--- a/qutebrowser/browser/webengine/webenginesettings.py
+++ b/qutebrowser/browser/webengine/webenginesettings.py
@@ -493,7 +493,7 @@ def _init_site_specific_quirks():
                   "AppleWebKit/{webkit_version} (KHTML, like Gecko) "
                   "{upstream_browser_key}/{upstream_browser_version} "
                   "Safari/{webkit_version}")
-    firefox_ua = "Mozilla/5.0 ({os_info}; rv:131.0) Gecko/20100101 Firefox/131.0"
+    firefox_ua = "Mozilla/5.0 ({os_info}; rv:133.0) Gecko/20100101 Firefox/133.0"
 
     def maybe_newer_chrome_ua(at_least_version):
         """Return a new UA if our current chrome version isn't at least at_least_version."""
diff --git a/qutebrowser/config/configdata.yml b/qutebrowser/config/configdata.yml
index aa519c2cf..f3432e5fd 100644
--- a/qutebrowser/config/configdata.yml
+++ b/qutebrowser/config/configdata.yml
@@ -773,14 +773,14 @@ content.headers.user_agent:
       # Vim-protip: Place your cursor below this comment and run
       # :r!python scripts/dev/ua_fetch.py
       - - "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36
-          (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36"
-        - Chrome 129 macOS
+          (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
+        - Chrome 131 macOS
       - - "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,
-          like Gecko) Chrome/129.0.0.0 Safari/537.36"
-        - Chrome 129 Win10
+          like Gecko) Chrome/131.0.0.0 Safari/537.36"
+        - Chrome 131 Win10
       - - "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like
-          Gecko) Chrome/129.0.0.0 Safari/537.36"
-        - Chrome 129 Linux
+          Gecko) Chrome/131.0.0.0 Safari/537.36"
+        - Chrome 131 Linux
   supports_pattern: true
   desc: |
     User agent to send.