Oct <var data-var='date'> 2</var>, <var data-var='time'>01:32</var> UTC Resolved - the maintenance is complete and everything has stabilized Oct <var data-var='date'> 2</var>, <var data-var='time'>01:15</var> UTC Identified - infrastructure maintenance is having a larger impact on availability of PyPI's backends than anticipated. we are working to stabilize.

PyPI Backends Partial Availability

Oct <var data-var='date'> 1</var>, <var data-var='time'>15:35</var> UTC Completed - The scheduled maintenance has been completed. Sep <var data-var='date'>25</var>, <var data-var='time'>15:35</var> UTC In progress - We will leave this maintenance window notice open for visibility. Sep <var data-var='date'>25</var>, <var data-var='time'>15:34</var> UTC Scheduled - The deprecated XML-RPC `browse()` method has been removed and turned into an error response. After being abused for multiple days and triggering long outages for all users, this deprecated method has been removed from the generally-deprecated XML-RPC API. If you need to query for this data, use BigQuery Datasets to query releases by classifier. https://docs.pypi.org/api/bigquery/#project-metadata-table

Deprecated XML-RPC `browse()` method no longer works

Oct <var data-var='date'> 1</var>, <var data-var='time'>11:18</var> UTC Resolved - All services are restored. Oct <var data-var='date'> 1</var>, <var data-var='time'>11:13</var> UTC Monitoring - Multiple python.org services were impacted by expiration of internal TLS certificates caused by use of APIs deprecated by a recent library update. We have resolved the issue and are monitoring as services come back online after renewing their internal certificates.

Multiple services unavailable

Sep <var data-var='date'>29</var>, <var data-var='time'>01:24</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'>28</var>, <var data-var='time'>13:48</var> UTC Monitoring - We have resolved the issue and are monitoring for changes. Sep <var data-var='date'>28</var>, <var data-var='time'>13:47</var> UTC Update - We are continuing to investigate this issue. Sep <var data-var='date'>28</var>, <var data-var='time'>12:42</var> UTC Investigating - We are currently investigating this issue.

Issues with search, logins and logged-in pages

Sep <var data-var='date'>23</var>, <var data-var='time'>17:05</var> UTC Resolved - A fix has been implemented and the incident is closed. Sep <var data-var='date'>23</var>, <var data-var='time'>14:06</var> UTC Monitoring - The traffic has subsided and the cluster is stable. A performance fix has been drafted. Sep <var data-var='date'>23</var>, <var data-var='time'>11:02</var> UTC Investigating - We are currently investigating this issue.

Feb <var data-var='date'>26</var>, <var data-var='time'>23:26</var> UTC Resolved - The incident has been resolved. Feb <var data-var='date'>26</var>, <var data-var='time'>20:40</var> UTC Update - The root cause has been identified as an erroneous scaling operation that affected some application workloads. All services have been restored and are coming back online. We are monitoring to confirm full recovery. Feb <var data-var='date'>26</var>, <var data-var='time'>20:04</var> UTC Investigating - We are currently investigating this issue

Python Infrastructure Outage

Feb <var data-var='date'>19</var>, <var data-var='time'>23:59</var> UTC Resolved - This incident has been resolved. Feb <var data-var='date'>19</var>, <var data-var='time'>22:56</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Feb <var data-var='date'>19</var>, <var data-var='time'>22:46</var> UTC Investigating - We are currently investigating this issue.

API Traffic experiencing intermittent failures

Jan <var data-var='date'> 7</var>, <var data-var='time'>23:00</var> UTC Resolved - This incident has been resolved. Jan <var data-var='date'> 7</var>, <var data-var='time'>22:59</var> UTC Monitoring - We identified a database lock causing contention and stopped all upload backends to release all locks and are monitoring for recovery. Jan <var data-var='date'> 7</var>, <var data-var='time'>22:42</var> UTC Investigating - We are investigating why PyPI uploads are failing.

PyPI Uploads failing

Nov <var data-var='date'>12</var>, <var data-var='time'>16:26</var> UTC Resolved - This incident has been resolved. Nov <var data-var='date'>12</var>, <var data-var='time'>15:50</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Nov <var data-var='date'>12</var>, <var data-var='time'>15:46</var> UTC Investigating - We are currently observing a slowdown in background requests processing for events on PyPI.org This could lead to stale web pages and API responses as the events system is not able to purge the caches. Our team is continuing to investigate.

Slow updates to PyPI pages/API responses

Jul <var data-var='date'>29</var>, <var data-var='time'>19:58</var> UTC Resolved - This incident has been resolved. Jul <var data-var='date'>29</var>, <var data-var='time'>14:41</var> UTC Monitoring - The PyPI search index has degraded and is not returning results. A reindexing job has begun, and results will be available once it completes.

PyPI Search Index Degraded

Jun <var data-var='date'>11</var>, <var data-var='time'>19:23</var> UTC Completed - This maintenance is complete! All metrics have returned to baseline. Jun <var data-var='date'>11</var>, <var data-var='time'>19:16</var> UTC Verifying - All database tasks are complete and we are now monitoring for stability post-upgrade. Services should be back online in full. Jun <var data-var='date'>11</var>, <var data-var='time'>19:10</var> UTC Update - The core upgrade is complete, we are awaiting the completion of post-upgrade statistics updates which are taking longer than anticipated. Jun <var data-var='date'>11</var>, <var data-var='time'>19:00</var> UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Jun <var data-var='date'>11</var>, <var data-var='time'>18:50</var> UTC Scheduled - PyPI will be undergoing maintenance for a major version database upgrade. We anticipate up to 5-10 minutes of disruption when the cut-over occurs.

PyPI Database Upgrades

May <var data-var='date'>27</var>, <var data-var='time'>12:53</var> UTC Resolved - We have not seen a return of the traffic that caused this incident after removing the temporary block. We will open a new incident if we need to take action again. May <var data-var='date'>25</var>, <var data-var='time'>12:16</var> UTC Update - We have removed the temporary block and are continuing to monitor. May <var data-var='date'>24</var>, <var data-var='time'>23:54</var> UTC Monitoring - Our block is in place and systems are stable, but we are not satisfied with having to block such a generic user-agent. If you are aware of a system that began a mass crawl of PyPI's JSON release endpoints starting at around 22:05 UTC 2025-05-25, please contact admin@pypi.org. May <var data-var='date'>24</var>, <var data-var='time'>23:37</var> UTC Update - We have identified a flood of requests from a cluster using the `python-requests/2.32.3` User-Agent, and attempting to hit all JSON project/releasese en masse. This causes excessive cache misses, which are overwhelming our backends. A temporary block has been put in place. May <var data-var='date'>24</var>, <var data-var='time'>23:11</var> UTC Identified - We have identified a large increase in CDN cache misses causing excess load on our backends. We are working to determine the reason for this increase. May <var data-var='date'>24</var>, <var data-var='time'>22:57</var> UTC Investigating - We are working to investigate a partial outage in the PyPI backends.

PyPI Partial Outage

Apr <var data-var='date'>24</var>, <var data-var='time'>12:18</var> UTC Resolved - This incident is resolved. We're going to do some further investigation to understand what led to the lock contention. Apr <var data-var='date'>24</var>, <var data-var='time'>12:09</var> UTC Monitoring - The locking process has been terminated and we're monitoring as things recover. Apr <var data-var='date'>24</var>, <var data-var='time'>12:09</var> UTC Identified - We've identified an issue with database contention arising from locking. Apr <var data-var='date'>24</var>, <var data-var='time'>12:02</var> UTC Investigating - We're investigating elevated error rates for pypi.org

PyPI Elevated Error Rates

Apr <var data-var='date'> 8</var>, <var data-var='time'>11:00</var> UTC Resolved - This incident has been resolved. Apr <var data-var='date'> 8</var>, <var data-var='time'>10:31</var> UTC Update - Errors have subsided, and we are monitoring as things continue to recover. Apr <var data-var='date'> 8</var>, <var data-var='time'>10:26</var> UTC Monitoring - We've increased capacity in the worker pools that service /simple and /json and are monitoring as things recover. Apr <var data-var='date'> 8</var>, <var data-var='time'>10:23</var> UTC Identified - We are working to resolve an outage impacting our /simple and /json apis.

PyPI Simple and JSON API Outage

Mar <var data-var='date'>11</var>, <var data-var='time'>13:39</var> UTC Resolved - This incident has been resolved. Mar <var data-var='date'>11</var>, <var data-var='time'>13:05</var> UTC Update - We are continuing to monitor for any further issues. Mar <var data-var='date'>11</var>, <var data-var='time'>12:50</var> UTC Monitoring - Our CDN provider has reported that the node in question has been removed from service. We are monitoring for continued reports. Mar <var data-var='date'>11</var>, <var data-var='time'>12:47</var> UTC Identified - This issue appears to be isolated to a single edge node in our CDN provider's network. They have validated the issue and are working to resolve. Mar <var data-var='date'>11</var>, <var data-var='time'>12:13</var> UTC Investigating - We are investigating issues with files from files.pythonhosted.org being served with corrupted data. A support ticket has been opened with our CDN provider and we are awaiting their response.

Download file corruption

Dec <var data-var='date'>13</var>, <var data-var='time'>15:09</var> UTC Resolved - This incident has been resolved. Dec <var data-var='date'>13</var>, <var data-var='time'>14:58</var> UTC Monitoring - We have begun seeing recovery across all services as of 14:44 UTC, we are monitoring for stability and ensuring all services are healthy. Dec <var data-var='date'>13</var>, <var data-var='time'>14:45</var> UTC Update - We are continuing to work on a fix for this issue. Dec <var data-var='date'>13</var>, <var data-var='time'>14:23</var> UTC Update - We are continuing to work on a fix for this issue. Dec <var data-var='date'>13</var>, <var data-var='time'>14:00</var> UTC Identified - Private networking in our datacenter for these services is currently intermittent, we have opened a ticket with the provider requesting assistance. Dec <var data-var='date'>13</var>, <var data-var='time'>13:59</var> UTC Update - We are continuing to investigate this issue. Dec <var data-var='date'>13</var>, <var data-var='time'>13:48</var> UTC Update - We are continuing to investigate this issue. Dec <var data-var='date'>13</var>, <var data-var='time'>13:44</var> UTC Investigating - We are currently investigating an infrastructure outage impacting python.org/downloads backends, docs.python.org backends, bugs.python.org backends, wiki.python.org backends, as well as other services.

Infrastructure Outage

Nov <var data-var='date'>13</var>, <var data-var='time'>19:32</var> UTC Completed - The scheduled maintenance has been completed. Nov <var data-var='date'>13</var>, <var data-var='time'>19:30</var> UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Nov <var data-var='date'>13</var>, <var data-var='time'>19:15</var> UTC Scheduled - PyPI will be undergoing a brief period of database maintenance to ensure that a set of migrations can complete without contention. During this time all PyPI backends will be temporarily unavailable and uploads will be disabled. Some requests that are not cached in our CDN may fail, particularly for recently updated projects and pages.

PyPI Database Maintenance

Aug <var data-var='date'>21</var>, <var data-var='time'>20:23</var> UTC Resolved - This incident has been resolved. Aug <var data-var='date'>21</var>, <var data-var='time'>19:53</var> UTC Identified - An error serving /simple requests has caused timeouts for some requests. We have identified the issue and are working on a revert.

PyPI Simple Index Timing Out

Aug <var data-var='date'> 9</var>, <var data-var='time'>19:26</var> UTC Resolved - Uploads are now being accepted properly. Aug <var data-var='date'> 9</var>, <var data-var='time'>19:23</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Aug <var data-var='date'> 9</var>, <var data-var='time'>19:08</var> UTC Identified - The issue has been identified and a fix is being implemented. Aug <var data-var='date'> 9</var>, <var data-var='time'>18:22</var> UTC Investigating - We are currently investigating an issue with PyPI uploads causing uploads to fail.

Issue with uploads

Jul <var data-var='date'>31</var>, <var data-var='time'>03:34</var> UTC Resolved - This incident has been resolved. Jul <var data-var='date'>31</var>, <var data-var='time'>03:21</var> UTC Investigating - We are currently investigating an issue with the PyPI backend due to a recent deploy.

PyPI Backend Outage

Jul <var data-var='date'>12</var>, <var data-var='time'>16:18</var> UTC Resolved - This maintenance is complete. Jul <var data-var='date'>12</var>, <var data-var='time'>14:28</var> UTC Identified - We are performing upgrades to PyPI's database storage which may impact performance and availability of the service as they rollout.

Jun <var data-var='date'> 8</var>, <var data-var='time'>14:52</var> UTC Resolved - All maintenance is complete and telemetry around database and application performance have stabilized. This incident is complete. Jun <var data-var='date'> 8</var>, <var data-var='time'>14:42</var> UTC Update - All upgrade steps are complete and performance is stabilizing. A final maintenance task is taking place in the background which will minimally impact performance until it is complete. Jun <var data-var='date'> 8</var>, <var data-var='time'>14:26</var> UTC Update - We are in the final steps of the upgrade and should see performance and availability stabilize in the next 30 minutes. Jun <var data-var='date'> 8</var>, <var data-var='time'>13:58</var> UTC Monitoring - Underlying upgrades are complete, we are running database statistics updates to optimize performance. Jun <var data-var='date'> 8</var>, <var data-var='time'>13:43</var> UTC Identified - We will be performing database maintenance including version upgrades and storage re-configuration. This will result in several brief outages for the service.

Jun <var data-var='date'> 5</var>, <var data-var='time'>16:05</var> UTC Resolved - This incident has been resolved. Jun <var data-var='date'> 5</var>, <var data-var='time'>15:57</var> UTC Monitoring - A cascading failure due to an expired certificate led to this outage. The certificate has been expired and systems are coming back online. Jun <var data-var='date'> 5</var>, <var data-var='time'>15:38</var> UTC Identified - An outage in our infrastructure is impacting availability of us.pycon.org and python.org

Outage in python.org and us.pycon.org

Mar <var data-var='date'>28</var>, <var data-var='time'>12:56</var> UTC Resolved - This incident has been resolved. Mar <var data-var='date'>28</var>, <var data-var='time'>02:16</var> UTC Identified - We have temporarily suspended new project creation and new user registration to mitigate an ongoing malware upload campaign.

PyPI New User Registration and New Project Creation Temporarily Suspended.

Mar <var data-var='date'>12</var>, <var data-var='time'>20:41</var> UTC Resolved - This incident has been resolved. Mar <var data-var='date'>12</var>, <var data-var='time'>20:19</var> UTC Monitoring - Workers have been restarted and are clearing backlog of enqueued tasks. Mar <var data-var='date'>12</var>, <var data-var='time'>20:00</var> UTC Identified - A maintenance event requires us to pause our workers, which will delay cache purges and email delivery. We anticipate this will persist for up to 30 minutes.

Is Python Package Index down?

Python Package Index status is UP

Lastest published events

PyPI Backends Partial Availability

Deprecated XML-RPC `browse()` method no longer works

Multiple services unavailable

Python Package Index Services, Components and Regions

Recent Python Package Index events

PyPI Backends Partial Availability

Deprecated XML-RPC `browse()` method no longer works

Multiple services unavailable

Issues with search, logins and logged-in pages

Issues with search, logins and logged-in pages

Python Infrastructure Outage