diff --git a/src/common/java/net/minecraftforge/gradle/common/tasks/SignJar.java b/src/common/java/net/minecraftforge/gradle/common/tasks/SignJar.java
index dda39600c..78f778465 100644
--- a/src/common/java/net/minecraftforge/gradle/common/tasks/SignJar.java
+++ b/src/common/java/net/minecraftforge/gradle/common/tasks/SignJar.java
@@ -65,6 +65,8 @@ public void doTask() throws IOException {
             map.put("keypass", getKeyPass().get());
         if (getKeyStore().isPresent())
             map.put("keyStore", getKeyStore().get());
+        if (getTsaUrl().isPresent())
+            map.put("tsaurl", getTsaUrl().get());
 
         getProject().getAnt().invokeMethod("signjar", map);
 
@@ -165,6 +167,10 @@ private void writeOutputJar(File signedJar, File outputJar, Map<String, Entry<by
     @Optional
     public abstract Property<String> getKeyStore();
 
+    @Input
+    @Optional
+    public abstract Property<String> getTsaUrl();
+
     @Override
     public PatternFilterable exclude(String... arg0) {
         return patternSet.exclude(arg0);