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Support Kotlin 2.4.0 #21938

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Support Kotlin 2.4.0#21938
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questionFurther information is requested

Description

@hfhbd
hfhbd
opened on Jun 4, 2026

Description of the issue
Kotlin 2.4.0 was released on 2026-06-03: https://github.com/JetBrains/kotlin/releases/tag/v2.4.0.

Kotlin 2.4.0 does not support K1 and language level <1.9 anymore. The compiler api changed a lot.

IMHO CodeQL should use the (experimental) analysis api, the same api IntelliJ, dokka and detekt is using, because it is somehow more stable and CodeQL only reads the code. The current IR plugin is too low-level (and can change the code).

Error message: Kotlin version 2.4.0 is too recent. CodeQL currently supports versions below 2.3.30

PR: #21970

Activity

  1. hfhbd
    added
    questionFurther information is requested
    on Jun 4, 2026
  2. adsamcik
    added a commit that references this issue on Jun 5, 2026

    ci: replace CodeQL default setup with pinned advanced workflow; add d…

    04a15f0
  3. evengul
    added a commit that references this issue on Jun 10, 2026

    build(deps): pin Kotlin to 2.3.21 to keep CodeQL green

    458a370
  4. gastaldi
    added 2 commits that reference this issue on Jun 11, 2026

    Temporarily disable CodeQL analysis until Kotlin 2.4.0 is supported

    a899a97

    Temporarily disable CodeQL analysis until Kotlin 2.4.0 is supported

    9ea5cc1
  5. holly-cummins
    added a commit that references this issue on Jun 12, 2026

    Temporarily disable CodeQL analysis until Kotlin 2.4.0 is supported

    6431839
  6. edwardlthompson
    added 2 commits that reference this issue on Jun 13, 2026

    fix(ci): raise debug APK budget to 27 MB; CodeQL build-mode none for …

    9dbfc0e

    fix(ci): CodeQL scan Actions only until Kotlin 2.4 supported

    a64c270
  7. Greigh
    added 2 commits that reference this issue on Jun 15, 2026

    Pin Kotlin to 2.3.21 so CodeQL traced builds succeed.

    497b7bb

    Bump CodeQL Action from v3 to v4.

    a5f5b42
  8. edwardlthompson
    added a commit that references this issue on Jun 18, 2026

    CodeQL: pin Kotlin 2.3.21 for scan until 2.4.0 supported.

    5243319
  9. pzverkov
    added 2 commits that reference this issue on Jun 19, 2026

    bump dependencies in one batch

    d6b8017

    bump dependencies in one batch

    fee6693

  10. pascalknupper commented on Jun 30, 2026

    @pascalknupper
    pascalknupper
    on Jun 30, 2026

    Issue seems the be resolved by marked PR, thanks a lot :) is there any plan to release a new version soon?

  11. omatheusmesmo
    added a commit that references this issue on Jun 30, 2026

    Temporarily disable CodeQL analysis until Kotlin 2.4.0 is supported

    337b4db

  12. 6 remaining items

  13. tolboy
    added a commit that references this issue on Jul 4, 2026

    ci: tolerate CodeQL Kotlin-extractor lag on the Security workflow

    18b65e0
  14. thebehera
    added 3 commits that reference this issue on Jul 4, 2026

    ci: park CodeQL java-kotlin analysis while its extractor lacks Kotlin…

    44900ca

    ci: park CodeQL java-kotlin analysis while its extractor lacks Kotlin…

    e986c7a

    chore: upgrade to Kotlin 2.4.0 (rebased; #253 link fix + CodeQL park …

    76cdcf8
  15. forketyfork
    added a commit that references this issue on Jul 6, 2026

    Drop java-kotlin from CodeQL until Kotlin 2.4.0 is supported

    adad0b4
  16. fluentcrafter
    added a commit that references this issue on Jul 6, 2026

    ci(ci): make CodeQL java-kotlin analysis non-blocking pending Kotlin …

    5d7f07b
  17. Chikati
    added a commit that references this issue on Jul 7, 2026

    ci(codeql): gate out java-kotlin until upstream supports Kotlin 2.4

    d1d997b

  18. jketema commented on Jul 8, 2026

    @jketema
    jketema
    on Jul 8, 2026
    Contributor

    CodeQL 2.26.0 has been release. Note that it will still take a bit of time before this version becomes the default.

  19. jketema
    closed this as completedon Jul 8, 2026

  20. hfhbd commented on Jul 8, 2026

    @hfhbd
    hfhbd
    on Jul 8, 2026
    Author

    In case you use the manual setup, you need to use https://github.com/github/codeql-action/tree/main/setup-codeql with 4.37.0 or later and tools: linked

  21. slysmoke
    added a commit that references this issue on Jul 17, 2026

    Disable java-kotlin CodeQL analysis until Kotlin 2.4.10 is supported

    d805e6c
  22. jnbdz
    added a commit that references this issue on Aug 11, 2026

    Temporarily disable CodeQL analysis until Kotlin 2.4.0 is supported

    3190958
  23. rolvraen
    added a commit that references this issue on Aug 31, 2026

    CodeQL: manual build-mode + GitHub Code Quality upload for java-kotlin (

    1341504
  24. Greigh
    added 2 commits that reference this issue on Sep 30, 2026

    Pin Kotlin to 2.3.21 so CodeQL traced builds succeed.

    c133313

    Bump CodeQL Action from v3 to v4.

    01e0ae0
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