diff --git a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/AbstractScriptConfigurationManager.kt b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/AbstractScriptConfigurationManager.kt
index f84c6c63315..766b73e3574 100644
--- a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/AbstractScriptConfigurationManager.kt
+++ b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/AbstractScriptConfigurationManager.kt
@@ -5,11 +5,14 @@
 
 package org.jetbrains.kotlin.idea.core.script.configuration
 
+import com.intellij.ProjectTopics
 import com.intellij.codeInsight.daemon.DaemonCodeAnalyzer
 import com.intellij.openapi.extensions.Extensions
 import com.intellij.openapi.fileEditor.FileEditorManager
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.projectRoots.Sdk
+import com.intellij.openapi.roots.ModuleRootEvent
+import com.intellij.openapi.roots.ModuleRootListener
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.psi.PsiElementFinder
 import com.intellij.psi.PsiFile
@@ -207,6 +210,15 @@ internal abstract class AbstractScriptConfigurationManager(
         return classpathRoots.hasNotCachedRoots(configuration)
     }
 
+    init {
+        val connection = project.messageBus.connect()
+        connection.subscribe(ProjectTopics.PROJECT_ROOTS, object : ModuleRootListener {
+            override fun rootsChanged(event: ModuleRootEvent) {
+                clearClassRootsCaches()
+            }
+        })
+    }
+
     /**
      * Clear configuration caches
      * Start re-highlighting for opened scripts
@@ -261,11 +273,11 @@ internal abstract class AbstractScriptConfigurationManager(
             }
         }
 
-    private fun newClassRootsCache() = object : ScriptClassRootsCache(project) {
-        override val all = cache.allApplied()
-        override fun getConfiguration(file: VirtualFile) =
-            this@AbstractScriptConfigurationManager.getConfiguration(file)
-    }
+    private fun newClassRootsCache() =
+        object : ScriptClassRootsCache(project, cache.allApplied()) {
+            override fun getConfiguration(file: VirtualFile) =
+                this@AbstractScriptConfigurationManager.getConfiguration(file)
+        }
 
     private fun clearClassRootsCaches() {
         debug { "class roots caches cleared" }
diff --git a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/utils/ScriptClassRootsCache.kt b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/utils/ScriptClassRootsCache.kt
index 905305f72e0..535a2e44d4d 100644
--- a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/utils/ScriptClassRootsCache.kt
+++ b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/configuration/utils/ScriptClassRootsCache.kt
@@ -20,8 +20,10 @@ import org.jetbrains.kotlin.idea.core.script.ScriptConfigurationManager
 import org.jetbrains.kotlin.idea.core.script.debug
 import org.jetbrains.kotlin.scripting.resolve.ScriptCompilationConfigurationWrapper
 
-internal abstract class ScriptClassRootsCache(private val project: Project) {
-    protected abstract val all: Collection<Pair<VirtualFile, ScriptCompilationConfigurationWrapper>>
+internal abstract class ScriptClassRootsCache(
+    private val project: Project,
+    val all: Collection<Pair<VirtualFile, ScriptCompilationConfigurationWrapper>>
+) {
     protected abstract fun getConfiguration(file: VirtualFile): ScriptCompilationConfigurationWrapper?
 
     private fun getScriptSdk(compilationConfiguration: ScriptCompilationConfigurationWrapper?): Sdk? {