Do not propagate method deprecation through overrides since 1.9

Reports a declarations that are propagated by @Deprecated annotation that will lead to compilation error since 1.9.

Motivation types:

Implementation changes are required for implementation design/architectural reasons
Inconsistency in the design (things are done differently in different contexts)

More details: KT-47902: Do not propagate method deprecation through overrides

The quick-fix copies @Deprecated annotation from the parent declaration.

Example:

  open class Base {
      @Deprecated("Don't use")
      open fun foo() {}
  }

  class Derived : Base() {
      override fun foo() {}
  }

After the quick-fix is applied:

  open class Base {
      @Deprecated("Don't use")
      open fun foo() {}
  }

  class Derived : Base() {
      @Deprecated("Don't use")
      override fun foo() {}
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

OverrideDeprecatedMigration

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Kotlin | Migration

This inspection only reports if the Kotlin language level of the project or module is 1.6 or higher.

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection OverrideDeprecatedMigration

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025