diff --git a/JSONWebToken.podspec b/JSONWebToken.podspec
index 9dce369..2bf5306 100644
--- a/JSONWebToken.podspec
+++ b/JSONWebToken.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name = 'JSONWebToken'
-  spec.version = '2.1.0'
+  spec.version = '2.1.1'
   spec.summary = 'Swift library for JSON Web Tokens (JWT).'
   spec.homepage = 'https://github.com/kylef/JSONWebToken.swift'
   spec.license = { :type => 'BSD', :file => 'LICENSE' }
diff --git a/Sources/ClaimSet.swift b/Sources/ClaimSet.swift
index 2be08ca..7626498 100644
--- a/Sources/ClaimSet.swift
+++ b/Sources/ClaimSet.swift
@@ -1,3 +1,5 @@
+import Foundation
+
 public struct ClaimSet {
   var claims: [String: Any]
 
diff --git a/Sources/Encode.swift b/Sources/Encode.swift
index 04f4109..6ac88c1 100644
--- a/Sources/Encode.swift
+++ b/Sources/Encode.swift
@@ -1,3 +1,6 @@
+import Foundation
+import CryptoSwift
+
 /*** Encode a set of claims
  - parameter claims: The set of claims
  - parameter algorithm: The algorithm to sign the payload with