diff --git a/stirling-pdf/build.gradle b/stirling-pdf/build.gradle
index 8ab50f9fa..fe1c351df 100644
--- a/stirling-pdf/build.gradle
+++ b/stirling-pdf/build.gradle
@@ -111,6 +111,12 @@ jar {
         configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
     }
 
+    // Exclude signature files to prevent "Invalid signature file digest" errors
+    exclude 'META-INF/*.SF'
+    exclude 'META-INF/*.DSA'
+    exclude 'META-INF/*.RSA'
+    exclude 'META-INF/*.EC'
+
     manifest {
         attributes(
             'Main-Class': 'stirling.software.SPDF.SPDFApplication',