diff --git a/build.gradle b/build.gradle
index b09c03f..452020e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@ plugins {
     id "java"
     id "jacoco"
     id "io.spring.dependency-management" version "1.0.11.RELEASE"
-    id 'info.solidsoft.pitest' version '1.6.0'
+    id 'info.solidsoft.pitest' version '1.9.11'
     id "org.sonarqube" version "3.3"
 }