diff --git a/ktlint-rule-engine-core/api/ktlint-rule-engine-core.api b/ktlint-rule-engine-core/api/ktlint-rule-engine-core.api
index 47b48e6457..27485a3075 100644
--- a/ktlint-rule-engine-core/api/ktlint-rule-engine-core.api
+++ b/ktlint-rule-engine-core/api/ktlint-rule-engine-core.api
@@ -187,11 +187,9 @@ public final class com/pinterest/ktlint/rule/engine/core/api/ElementType {
 	public final fun getGT ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getGTEQ ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getHASH ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
-	public final fun getHEADER_KEYWORD ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getIDENTIFIER ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getIF ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getIF_KEYWORD ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
-	public final fun getIMPL_KEYWORD ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getIMPORT_ALIAS ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getIMPORT_DIRECTIVE ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
 	public final fun getIMPORT_KEYWORD ()Lorg/jetbrains/kotlin/com/intellij/psi/tree/IElementType;
diff --git a/ktlint-rule-engine-core/src/main/kotlin/com/pinterest/ktlint/rule/engine/core/api/ElementType.kt b/ktlint-rule-engine-core/src/main/kotlin/com/pinterest/ktlint/rule/engine/core/api/ElementType.kt
index ee3d0ce7a6..d02b67da9a 100644
--- a/ktlint-rule-engine-core/src/main/kotlin/com/pinterest/ktlint/rule/engine/core/api/ElementType.kt
+++ b/ktlint-rule-engine-core/src/main/kotlin/com/pinterest/ktlint/rule/engine/core/api/ElementType.kt
@@ -271,8 +271,6 @@ public object ElementType {
     public val INFIX_KEYWORD: IElementType = KtTokens.INFIX_KEYWORD
     public val CONST_KEYWORD: IElementType = KtTokens.CONST_KEYWORD
     public val SUSPEND_KEYWORD: IElementType = KtTokens.SUSPEND_KEYWORD
-    public val HEADER_KEYWORD: IElementType = KtTokens.HEADER_KEYWORD
-    public val IMPL_KEYWORD: IElementType = KtTokens.IMPL_KEYWORD
     public val EXPECT_KEYWORD: IElementType = KtTokens.EXPECT_KEYWORD
     public val ACTUAL_KEYWORD: IElementType = KtTokens.ACTUAL_KEYWORD
 
diff --git a/ktlint-ruleset-standard/src/main/kotlin/com/pinterest/ktlint/ruleset/standard/rules/ModifierOrderRule.kt b/ktlint-ruleset-standard/src/main/kotlin/com/pinterest/ktlint/ruleset/standard/rules/ModifierOrderRule.kt
index fdb2907e54..021243e44b 100644
--- a/ktlint-ruleset-standard/src/main/kotlin/com/pinterest/ktlint/ruleset/standard/rules/ModifierOrderRule.kt
+++ b/ktlint-ruleset-standard/src/main/kotlin/com/pinterest/ktlint/ruleset/standard/rules/ModifierOrderRule.kt
@@ -108,7 +108,6 @@ public class ModifierOrderRule : StandardRule("modifier-order") {
                 OPERATOR_KEYWORD,
                 DATA_KEYWORD,
                 // NOINLINE_KEYWORD, CROSSINLINE_KEYWORD, OUT_KEYWORD, IN_KEYWORD, REIFIED_KEYWORD
-                // HEADER_KEYWORD, IMPL_KEYWORD
             )
         private val tokenSet = TokenSet.create(*ORDERED_MODIFIERS)
     }