diff --git a/build.gradle b/build.gradle
index 04b8a0af..29e054c2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -45,6 +45,7 @@ allprojects {
     // without this we would generate an empty pgpainless.jar for the project root
     // https://stackoverflow.com/a/25445035
     jar {
+        reproducibleFileOrder = true
         onlyIf { !sourceSets.main.allSource.files.isEmpty() }
     }