Skip to content

Releases: prometheus/alertmanager

0.33.0 / 2026-06-12

12 Jun 16:00
@github-actions github-actions
v0.33.0
This tag was signed with the committer’s verified signature.
Spaceman1701 Ethan Hunter
GPG key ID: 449FF7E0B40350F0
Verified
Learn about vigilant mode.
5d3ceb5
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.33.0 / 2026-06-12 Latest
Latest
  • [CHANGE] The '--enable-feature=auto-gomaxprocs' option has been removed. This flag had no effect since v0.29 and was deprecated in v0.32. It can be safely removed from any startup scripts. #5090, #5251
  • [CHANGE] Add group-key-in-metrics feature flag. #5047
  • [CHANGE] Move AlertMarker, GroupMarker to marker package. #5047
  • [CHANGE] Remove alertmanager_marked_alerts. #5047
  • [CHANGE] Remove the following from types package: MemMarker, AlertState*, AlertStatus. #5047
  • [FEATURE] Introduce per aggregation group AlertMarkers and drop Global Alert Marker. #5047
  • [FEATURE] ui: Add support for silence annotations. #5017
  • [FEATURE] api: Add receiver labels and receiver_matchers filter to /api/v2/receivers, /api/v2/alerts, and /api/v2/alerts/groups. #5152
  • [FEATURE] eventrecorder: Add structured event recorder behind --enable-feature=event-recorder, with file, webhook, and kafka outputs. #5072, #5246
  • [ENHANCEMENT] Add the use_aws_http_client config option to the sns notifier. #5178
  • [ENHANCEMENT] template: Add now function to get current time. #5188
  • [ENHANCEMENT] docs: Clarify YAML quoting vs matcher token quoting in UTF-8 matchers section. #5264
  • [BUGFIX] jira: Allow disabling the resolve transition when resolve_transition is not set. #4821
  • [BUGFIX] jira: Include unresolved issues in wont_fix_resolution JQL to prevent duplicate issue creation. #5185
  • [BUGFIX] sns: Support the AWS_CA_BUNDLE env variable for the sns notifier. #5178
Assets 42

0.32.2 / 2026-06-05

05 Jun 16:16
@prombot prombot
v0.32.2
This tag was signed with the committer’s verified signature.
Spaceman1701 Ethan Hunter
GPG key ID: 449FF7E0B40350F0
Verified
Learn about vigilant mode.
ce33c59
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.32.2 / 2026-06-05
  • [BUGFIX] Fix dispatcher goroutine leaks on destroyed alertgroup swap. #5241
Loading

0.32.1 / 2026-04-29

29 Apr 17:55
@prombot prombot
v0.32.1
This tag was signed with the committer’s verified signature.
SoloJacobs Solomon Jacobs
GPG key ID: 124EFDBD5CBF855A
Verified
Learn about vigilant mode.
8768aa6
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.32.1 / 2026-04-29
  • [BUGFIX] dispatcher: Fix issue with dispatching to a contended route. #5179
  • [BUGFIX] ui: Provide prebuilt ui assets in release. #5191
  • [ENHANCEMENT] ui: Support building artifacts in containers with Docker or Podman. #5102
Loading

0.32.1-rc.0 / 2026-04-27

28 Apr 20:55
@prombot prombot
v0.32.1-rc.0
This tag was signed with the committer’s verified signature.
SoloJacobs Solomon Jacobs
GPG key ID: 124EFDBD5CBF855A
Verified
Learn about vigilant mode.
ecff0e1

Choose a tag to compare

View all tags
0.32.1-rc.0 / 2026-04-27 Pre-release
Pre-release
  • [BUGFIX] dispatcher: Fix issue with dispatching to a contended route. #5179
  • [BUGFIX] ui: Provide prebuilt ui assets in release. #5191
  • [ENHANCEMENT] ui: Support building artifacts in containers with Docker or Podman. #5102
Loading

0.32.0 / 2026-04-08

08 Apr 18:31
@prombot prombot
v0.32.0
This tag was signed with the committer’s verified signature.
SoloJacobs Solomon Jacobs
GPG key ID: 124EFDBD5CBF855A
Verified
Learn about vigilant mode.
685a2a1
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.32.0 / 2026-04-08
  • [CHANGE] go get github.com/prometheus/alertmanager/ui will now fail as compiled UI assets are no longer checked into the repository. Downstream builds that rely on these assets being present in the source tree must now build the UI from source. #5113
  • [CHANGE] The '--enable-feature=auto-gomaxprocs' option is deprecated and will be removed in v0.33. This flag currently has no effect and can be safely removed from any startup scripts. #5090
  • [CHANGE] Update internal function signatures across multiple packages. This affects any project that integrates Alertmanager code.
  • [ENHANCEMENT] Add static asset caching. #5113
  • [ENHANCEMENT] Reduce memory allocations through pre-sizing collections and batch allocation. #5020
  • [ENHANCEMENT] Replace help with documentation in navigation bar. #4943
  • [ENHANCEMENT] docs(ha): Update high availability documentation. #5136
  • [ENHANCEMENT] docs: Add auth_secret_file for smtp in document. #5036
  • [ENHANCEMENT] docs: Add description for global telegram_bot_token. #5114
  • [ENHANCEMENT] docs: Add note about notifier timeouts. #5077
  • [ENHANCEMENT] docs: Fix force_implicit_tls config field name. #5030
  • [ENHANCEMENT] docs: Link community supported integrations. #4978
  • [ENHANCEMENT] docs: Remove duplicate header. #5034
  • [ENHANCEMENT] docs: Update mutual tls reference in high availability documentation. #5120
  • [ENHANCEMENT] tracing: Use noop spans when tracing disabled. #5118
  • [ENHANCEMENT] ui: Serve pre-compressed assets. #5133
  • [FEATURE] Add silence annotations. #4965
  • [FEATURE] Add silence logging option. #4163
  • [FEATURE] Add support for multiple matcher set silences. #4957
  • [FEATURE] Add the reason for notifying in dedup stage. #4971
  • [FEATURE] mattermost: Flatten attachments into top-level config. #5009
  • [FEATURE] mattermost: Support global webhook url. #4998
  • [FEATURE] slack: Add default color from template. #5014
  • [FEATURE] slack: Allow receiver to edit existing messages. #5007
  • [FEATURE] template: Add dict, map and append functions. #5093
  • [FEATURE] webhook: Add full payload templating support for notifier. #5011
  • [BUGFIX] config: Check for empty cluster tls client config. #5126
  • [BUGFIX] config: Don't crash upon reading empty config for notifier. #4979
  • [BUGFIX] config: Fix ipv6 address handling in hostport.string(). #5040
  • [BUGFIX] mattermost: Omit empty text field in notifications. #4985
  • [BUGFIX] telegram: Send fallback message when notification exceeds character limit. #5074
  • [BUGFIX] tracing: Properly shutdown tracer provider. #5131
  • [BUGFIX] ui: Fix escaping for matcher values with quotes. #4862
  • [BUGFIX] ui: Handle special chars in silence regex-matchers. #4942
  • [BUGFIX] ui: Support utf-8 label names in matchers. #5089
Loading

0.31.1 / 2026-02-11

11 Feb 21:28
@prombot prombot
v0.31.1
This tag was signed with the committer’s verified signature.
SoloJacobs Solomon Jacobs
GPG key ID: 124EFDBD5CBF855A
Verified
Learn about vigilant mode.
7a639ba

Choose a tag to compare

View all tags
0.31.1 / 2026-02-11
  • [BUGFIX] docs: Fix email TLS configuration example. #4976
  • [BUGFIX] docs: Add telegram bot token options to global config docs. #4999
Loading

0.31.0 / 2026-02-02

02 Feb 13:34
@prombot prombot
v0.31.0
This tag was signed with the committer’s verified signature.
SuperQ Ben Kochie
GPG key ID: C646B23C9E3245F1
Verified
Learn about vigilant mode.
0ae07a0
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.31.0 / 2026-02-02
  • [ENHANCEMENT] docs(opsgenie): Fix description of api_url field. #4908
  • [ENHANCEMENT] docs(slack): Document missing app configs. #4871
  • [ENHANCEMENT] docs: Fix max-silence-size-bytes. #4805
  • [ENHANCEMENT] docs: Update expr for AlertmanagerClusterFailedToSendAlerts to exclude value 0. #4872
  • [ENHANCEMENT] docs: Use matchers for inhibit rules examples. #4131
  • [ENHANCEMENT] docs: add notification integrations. #4901
  • [ENHANCEMENT] docs: update slack_config attachments documentation links. #4802
  • [ENHANCEMENT] docs: update description of filter query params in openapi doc. #4810
  • [ENHANCEMENT] provider: Reduce lock contention. #4809
  • [FEATURE] slack: Add support for top-level text field in slack notification. #4867
  • [FEATURE] smtp: Add support for authsecret from file. #3087
  • [FEATURE] smtp: Customize the ssl/tls port support (#4757). #4818
  • [FEATURE] smtp: Enhance email notifier configuration validation. #4826
  • [FEATURE] telegram: Add chat_id_file configuration parameter. #4909
  • [FEATURE] telegram: Support global bot token. #4823
  • [FEATURE] webhook: Support templating in url fields. #4798
  • [FEATURE] wechat: Add config directive to pass api secret via file. #4734
  • [FEATURE] provider: Implement per alert limits. #4819
  • [BUGFIX] Allow empty group_by to override parent route. #4825
  • [BUGFIX] Set spellcheck=false attribute on silence filter input. #4811
  • [BUGFIX] jira: Fix for handling api v3 with ADF. #4756
  • [BUGFIX] jira: Prevent hostname corruption in cloud api url replacement. #4892
Loading

0.30.1 / 2026-01-12

12 Jan 23:30
@prombot prombot
v0.30.1
This tag was signed with the committer’s verified signature.
SuperQ Ben Kochie
GPG key ID: C646B23C9E3245F1
Verified
Learn about vigilant mode.
0ded3cb
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.30.1 / 2026-01-12
  • [BUGFIX] Fix memory leak in tracing client. #4828
Loading

0.30.0 / 2025-12-15

15 Dec 17:23
@prombot prombot
v0.30.0
This tag was signed with the committer’s verified signature.
SuperQ Ben Kochie
GPG key ID: C646B23C9E3245F1
Verified
Learn about vigilant mode.
ecda677
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.30.0 / 2025-12-15
  • [CHANGE] Don't allow calling qids with an empty ids list. #4707
  • [FEATURE] Add mattermost integration. #4090
  • [FEATURE] Add saturday to the first day of the week options. #4473
  • [FEATURE] Add templating functions for working with urls. #4625
  • [FEATURE] cluster: Allow persistent peer names. #4636
  • [FEATURE] dispatch: Add start delay. #4704
  • [FEATURE] provider: Add subscriber channel metrics. #4630
  • [FEATURE] template: Add tojson function. #4773
  • [FEATURE] Add api http metrics. #4162
  • [FEATURE] Add distributed tracing support. #4745
  • [FEATURE] Add names to inhibit rules. #4628
  • [FEATURE] Add timeout option for pagerduty notifier. #4354
  • [FEATURE] Add timeout option for slack notifier. #4355
  • [FEATURE] Allow nested details fields in pagerduty. #3944
  • [FEATURE] Implement phantom_threading to group email alerts into threads. #4623
  • [FEATURE] gc: Report errors, but remove erroneous silences and continue. #4724
  • [FEATURE] jira: Template customfields. #4029
  • [FEATURE] jira: Allow configuring issue update via parameter. #4621
  • [FEATURE] Slack app support. #4211
  • [ENHANCEMENT] Add comment about smtp plain authentication. #4741
  • [ENHANCEMENT] Add documentation about high availability. #4708
  • [ENHANCEMENT] Add documentation for client_allowed_sans. #4706
  • [ENHANCEMENT] Improve logging around webhook dispatch failure. #4511
  • [ENHANCEMENT] Compile silence matchers when the silence is added. #4695
  • [ENHANCEMENT] Fix 's/client/alerts_api/g' broken link in 0.29. #4718
  • [ENHANCEMENT] Fix rocketchat_config docs. #4767
  • [ENHANCEMENT] Fix: <mute_time_interval> was renamed. #4729
  • [ENHANCEMENT] Improve inhibition performance. #4607
  • [ENHANCEMENT] Loadsnapshot: update matcher index properly while not holding lock. #4714
  • [ENHANCEMENT] Logging improvements. #4113
  • [ENHANCEMENT] Move query locking back into private query function. #4694
  • [ENHANCEMENT] Optimize the new inhibitor implementation for ~2.5x performance improvement. #4668
  • [ENHANCEMENT] Reduce the time dispatch.group holds the mutex. #4670
  • [ENHANCEMENT] Use b.loop() to simplify the code and improve performance. #4642
  • [ENHANCEMENT] Remove duplicate slice during silences query. #4696
  • [ENHANCEMENT] Silences: optimize incremental mutes queries via a silence version index. #4723
  • [ENHANCEMENT] Update description for filter param in openapi. #4775
  • [BUGFIX] Add new behavior to avoid races on config reload. #4705
  • [BUGFIX] config: Fix duplicate header detection for all case variants. #2810
  • [BUGFIX] marker: Stop state leakage from aggregation groups. #4438
  • [BUGFIX] Fix pprof debug endpoints not working with --web.route-prefix. #4698
  • [BUGFIX] Set context timeout for resolvepeers. #4343
Loading

0.30.0-rc.0 / 2025-12-10

10 Dec 15:42
@prombot prombot
v0.30.0-rc.0
This tag was signed with the committer’s verified signature.
SuperQ Ben Kochie
GPG key ID: C646B23C9E3245F1
Verified
Learn about vigilant mode.
b6083b7
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Choose a tag to compare

View all tags
0.30.0-rc.0 / 2025-12-10 Pre-release
Pre-release
  • [CHANGE] Don't allow calling qids with an empty ids list. #4707
  • [FEATURE] Add mattermost integration. #4090
  • [FEATURE] Add saturday to the first day of the week options. #4473
  • [FEATURE] Add templating functions for working with urls. #4625
  • [FEATURE] cluster: Allow persistent peer names. #4636
  • [FEATURE] dispatch: Add start delay. #4704
  • [FEATURE] provider: Add subscriber channel metrics. #4630
  • [FEATURE] template: Add tojson function. #4773
  • [FEATURE] Add api http metrics. #4162
  • [FEATURE] Add distributed tracing support. #4745
  • [FEATURE] Add names to inhibit rules. #4628
  • [FEATURE] Add timeout option for pagerduty notifier. #4354
  • [FEATURE] Add timeout option for slack notifier. #4355
  • [FEATURE] Allow nested details fields in pagerduty. #3944
  • [FEATURE] Implement phantom_threading to group email alerts into threads. #4623
  • [FEATURE] gc: Report errors, but remove erroneous silences and continue. #4724
  • [FEATURE] jira: Template customfields. #4029
  • [FEATURE] jira: Allow configuring issue update via parameter. #4621
  • [FEATURE] Slack app support. #4211
  • [ENHANCEMENT] Add comment about smtp plain authentication. #4741
  • [ENHANCEMENT] Add documentation about high availability. #4708
  • [ENHANCEMENT] Add documentation for client_allowed_sans. #4706
  • [ENHANCEMENT] Improve logging around webhook dispatch failure. #4511
  • [ENHANCEMENT] Compile silence matchers when the silence is added. #4695
  • [ENHANCEMENT] Fix 's/client/alerts_api/g' broken link in 0.29. #4718
  • [ENHANCEMENT] Fix rocketchat_config docs. #4767
  • [ENHANCEMENT] Fix: <mute_time_interval> was renamed. #4729
  • [ENHANCEMENT] Improve inhibition performance. #4607
  • [ENHANCEMENT] Loadsnapshot: update matcher index properly while not holding lock. #4714
  • [ENHANCEMENT] Logging improvements. #4113
  • [ENHANCEMENT] Move query locking back into private query function. #4694
  • [ENHANCEMENT] Optimize the new inhibitor implementation for ~2.5x performance improvement. #4668
  • [ENHANCEMENT] Reduce the time dispatch.group holds the mutex. #4670
  • [ENHANCEMENT] Use b.loop() to simplify the code and improve performance. #4642
  • [ENHANCEMENT] Remove duplicate slice during silences query. #4696
  • [ENHANCEMENT] Silences: optimize incremental mutes queries via a silence version index. #4723
  • [ENHANCEMENT] Update description for filter param in openapi. #4775
  • [BUGFIX] Add new behavior to avoid races on config reload. #4705
  • [BUGFIX] config: Fix duplicate header detection for all case variants. #2810
  • [BUGFIX] marker: Stop state leakage from aggregation groups. #4438
  • [BUGFIX] Fix pprof debug endpoints not working with --web.route-prefix. #4698
  • [BUGFIX] Set context timeout for resolvepeers. #4343
Loading