diff --git a/.gitignore b/.gitignore
index 0792935..e7c5e30 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@ lib
 .shards
 app
 *.dwarf
+*.lock
+bin/ameba
diff --git a/shard.yml b/shard.yml
index df0c397..be387ba 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: promise
-version: 1.1.2
+version: 1.1.3
 
 development_dependencies:
   ameba:
diff --git a/src/promise/deferred_promise.cr b/src/promise/deferred_promise.cr
index 4a70c61..7a8708c 100644
--- a/src/promise/deferred_promise.cr
+++ b/src/promise/deferred_promise.cr
@@ -30,7 +30,7 @@ class Promise::DeferredPromise(Input) < Promise
     t
   end
 
-  def type
+  def type : Class
     Input
   end
 
@@ -96,7 +96,7 @@ class Promise::DeferredPromise(Input) < Promise
   end
 
   # Used to create a generic promise if all we care about is success or failure
-  def then
+  def then : DeferredPromise(Nil)
     self.then { nil }
   end