diff --git a/Hummingbird/CGEvent+ext.swift b/Hummingbird/CGEvent+ext.swift
index 6d0a018..3377b24 100644
--- a/Hummingbird/CGEvent+ext.swift
+++ b/Hummingbird/CGEvent+ext.swift
@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CoreGraphics
 
 
 extension CGEvent {
diff --git a/Hummingbird/Modifiers.swift b/Hummingbird/Modifiers.swift
index acd702a..7212d72 100644
--- a/Hummingbird/Modifiers.swift
+++ b/Hummingbird/Modifiers.swift
@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CoreGraphics
 
 
 protocol Kind {