diff --git a/build.gradle b/build.gradle
index 23ac3564..8713c27d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -79,13 +79,13 @@ allprojects {
     }
 
     jacoco {
-        toolVersion = "0.8.1"
+        toolVersion = "0.8.5"
     }
 
     jacocoTestReport {
         dependsOn test
-        sourceDirectories = project.files(sourceSets.main.allSource.srcDirs)
-        classDirectories =  project.files(sourceSets.main.output)
+        sourceDirectories.setFrom(project.files(sourceSets.main.allSource.srcDirs))
+        classDirectories.setFrom(project.files(sourceSets.main.output))
         reports {
             xml.enabled true
         }
@@ -223,9 +223,9 @@ coveralls {
 
 task jacocoRootReport(type: JacocoReport) {
     dependsOn = subprojects.jacocoTestReport
-    sourceDirectories = files(subprojects.sourceSets.main.allSource.srcDirs)
-    classDirectories = files(subprojects.sourceSets.main.output)
-    executionData = files(subprojects.jacocoTestReport.executionData)
+    sourceDirectories.setFrom(files(subprojects.sourceSets.main.allSource.srcDirs))
+    classDirectories.setFrom(files(subprojects.sourceSets.main.output))
+    executionData.setFrom(files(subprojects.jacocoTestReport.executionData))
     reports {
         xml.enabled true
         xml.destination file("${buildDir}/reports/jacoco/test/jacocoTestReport.xml")