diff --git a/src/main/java/org/syndicate_lang/actors/Actor.java b/src/main/java/org/syndicate_lang/actors/Actor.java
index 1bad5bc..03ac4f5 100644
--- a/src/main/java/org/syndicate_lang/actors/Actor.java
+++ b/src/main/java/org/syndicate_lang/actors/Actor.java
@@ -58,7 +58,7 @@ public class Actor implements Executor {
         return new Actor().proxyFor(o);
     }
 
-    public static<T> Promise<Remote<T>> boot(Supplier<T> f) {
+    public static<T> Promise<Remote<T>> boot(ThrowingSupplier<T> f) {
         Promise<Remote<T>> p = new Promise<>();
         Actor a = new Actor();
         a.execute(
diff --git a/src/main/java/org/syndicate_lang/actors/Promise.java b/src/main/java/org/syndicate_lang/actors/Promise.java
index 673ed45..8a335ed 100644
--- a/src/main/java/org/syndicate_lang/actors/Promise.java
+++ b/src/main/java/org/syndicate_lang/actors/Promise.java
@@ -117,7 +117,7 @@ public class Promise<T> implements Future<T> {
         return this.andThen(ok, null);
     }
 
-    public void resolveCalling(Supplier<T> f) {
+    public void resolveCalling(ThrowingSupplier<T> f) {
         try {
             this.resolveWith(f.get());
         } catch (Throwable e) {
diff --git a/src/main/java/org/syndicate_lang/actors/ThrowingSupplier.java b/src/main/java/org/syndicate_lang/actors/ThrowingSupplier.java
new file mode 100644
index 0000000..81bf841
--- /dev/null
+++ b/src/main/java/org/syndicate_lang/actors/ThrowingSupplier.java
@@ -0,0 +1,5 @@
+package org.syndicate_lang.actors;
+
+public interface ThrowingSupplier<T> {
+    public T get() throws Throwable;
+}