diff --git a/build.gradle b/build.gradle
index c42caf139efeb468e9255c753466eefbbdd7fe44..f7a1171ab97c31512fcd4f76edea1bae5e9f6404 100644
--- a/build.gradle
+++ b/build.gradle
@@ -99,6 +99,8 @@ task extractPublicExamples(dependsOn: downloadPublicExamples, type: Copy) {
 
 clean {
 	delete "${projectDir}/public_examples"
+	delete "${projectDir}/states"
+	delete "${projectDir}/temp"
 }
 
 task regressionTests(dependsOn: extractPublicExamples, type: Test){