diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 590ccdcb9a4..2dfd4cd040a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-bin.zip
-distributionSha256Sum=7873ed5287f47ca03549ab8dcb6dc877ac7f0e3d7b1eb12685161d10080910ac
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-bin.zip
+distributionSha256Sum=8ad57759019a9233dc7dc4d1a530cefe109dc122000d57f7e623f8cf4ba9dfc4
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/testing/TCServiceMessagesTestExecutor.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/testing/TCServiceMessagesTestExecutor.kt
index fb005a80e4c..df753aff258 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/testing/TCServiceMessagesTestExecutor.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/testing/TCServiceMessagesTestExecutor.kt
@@ -44,7 +44,7 @@ class TCServiceMessagesTestExecutor(
 
     override fun execute(spec: TCServiceMessagesTestExecutionSpec, testResultProcessor: TestResultProcessor) {
         spec.wrapExecute {
-            val rootOperation = buildOperationExecutor.currentOperation.parentId
+            val rootOperation = buildOperationExecutor.currentOperation.parentId!!
 
             val client = spec.createClient(testResultProcessor, log)