diff --git a/plugins/uast-kotlin-fir/tests/org/jetbrains/uast/test/env/kotlin/AbstractFirUastTest.kt b/plugins/uast-kotlin-fir/tests/org/jetbrains/uast/test/env/kotlin/AbstractFirUastTest.kt
index b3e4fd3c253..e63ef192720 100644
--- a/plugins/uast-kotlin-fir/tests/org/jetbrains/uast/test/env/kotlin/AbstractFirUastTest.kt
+++ b/plugins/uast-kotlin-fir/tests/org/jetbrains/uast/test/env/kotlin/AbstractFirUastTest.kt
@@ -12,8 +12,10 @@ import com.intellij.openapi.vfs.VirtualFileManager
 import com.intellij.testFramework.LightProjectDescriptor
 import com.intellij.testFramework.registerServiceInstance
 import com.intellij.util.io.URLUtil
+import org.jetbrains.kotlin.idea.fir.invalidateCaches
 import org.jetbrains.kotlin.idea.test.KotlinLightCodeInsightFixtureTestCase
 import org.jetbrains.kotlin.idea.test.KotlinWithJdkAndRuntimeLightProjectDescriptor
+import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.test.KotlinTestUtils
 import org.jetbrains.uast.UFile
 import org.jetbrains.uast.UastFacade
@@ -62,6 +64,11 @@ abstract class AbstractFirUastTest : KotlinLightCodeInsightFixtureTestCase(), Fi
         registerExtensionPointAndServiceIfNeeded()
     }
 
+    override fun tearDown() {
+        project.invalidateCaches(file as? KtFile)
+        super.tearDown()
+    }
+
     override fun isFirPlugin(): Boolean = true
 
     override fun getProjectDescriptor(): LightProjectDescriptor =