diff --git a/jhdf/build.gradle b/jhdf/build.gradle
index 5d1d4d42..91d7bb69 100644
--- a/jhdf/build.gradle
+++ b/jhdf/build.gradle
@@ -188,10 +188,12 @@ signing {
     sign publishing.publications.maven
 }
 
+import com.github.spotbugs.snom.Confidence
+import com.github.spotbugs.snom.Effort
 spotbugs {
     ignoreFailures = true // Allow build to continue with errors
-    effort = "max"
-    reportLevel = "low" // Report all issues even low priority
+    effort = Effort.MAX
+    reportLevel = Confidence.LOW // Report all issues even low priority
     reportsDir = file("$buildDir/reports/spotbugs")
 }