diff --git a/analysis/analysis-api-fir/build.gradle.kts b/analysis/analysis-api-fir/build.gradle.kts
index f3bad443fa7..77ba463bb05 100644
--- a/analysis/analysis-api-fir/build.gradle.kts
+++ b/analysis/analysis-api-fir/build.gradle.kts
@@ -62,6 +62,8 @@ sourceSets {
     }
 }
 
+optInToIrSymbolInternals()
+
 projectTest(jUnitMode = JUnitMode.JUnit5) {
     dependsOn(":dist")
     workingDir = rootDir
diff --git a/compiler/ir/serialization.js/build.gradle.kts b/compiler/ir/serialization.js/build.gradle.kts
index 801cec55dbd..de8b503090e 100644
--- a/compiler/ir/serialization.js/build.gradle.kts
+++ b/compiler/ir/serialization.js/build.gradle.kts
@@ -15,6 +15,8 @@ dependencies {
     compileOnly(intellijCore())
 }
 
+optInToIrSymbolInternals()
+
 sourceSets {
     "main" { projectDefault() }
 }
diff --git a/compiler/ir/serialization.jvm/build.gradle.kts b/compiler/ir/serialization.jvm/build.gradle.kts
index c2b23e761fa..8f8d4f77925 100644
--- a/compiler/ir/serialization.jvm/build.gradle.kts
+++ b/compiler/ir/serialization.jvm/build.gradle.kts
@@ -12,6 +12,8 @@ dependencies {
     api(project(":compiler:frontend.java"))
 }
 
+optInToIrSymbolInternals()
+
 sourceSets {
     "main" {
         projectDefault()