diff --git a/CardIO.podspec b/CardIO.podspec
index c181244..9461f0f 100644
--- a/CardIO.podspec
+++ b/CardIO.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name             = 'CardIO'
-  spec.version          = '5.1.0'
+  spec.version          = '5.1.1'
   spec.license          = { type: 'MIT', file: 'LICENSE.md' }
   spec.homepage         = 'https://www.card.io'
   spec.authors          = { 'CardIO' => 'support@paypal.com' }
diff --git a/CardIO/CardIO.h b/CardIO/CardIO.h
index 1f50967..1b60cae 100644
--- a/CardIO/CardIO.h
+++ b/CardIO/CardIO.h
@@ -1,6 +1,6 @@
 //
 //  CardIO.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIOCreditCardInfo.h b/CardIO/CardIOCreditCardInfo.h
index 0183e67..1202b9d 100644
--- a/CardIO/CardIOCreditCardInfo.h
+++ b/CardIO/CardIOCreditCardInfo.h
@@ -1,6 +1,6 @@
 //
 //  CardIOCreditCardInfo.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIODetectionMode.h b/CardIO/CardIODetectionMode.h
index 72e1a30..cd7e48e 100644
--- a/CardIO/CardIODetectionMode.h
+++ b/CardIO/CardIODetectionMode.h
@@ -1,6 +1,6 @@
 //
 //  CardIODetectionMode.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIOPaymentViewController.h b/CardIO/CardIOPaymentViewController.h
index c1af1dc..a021b66 100644
--- a/CardIO/CardIOPaymentViewController.h
+++ b/CardIO/CardIOPaymentViewController.h
@@ -1,6 +1,6 @@
 //
 //  CardIOPaymentViewController.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIOPaymentViewControllerDelegate.h b/CardIO/CardIOPaymentViewControllerDelegate.h
index ff3763d..a4ec685 100644
--- a/CardIO/CardIOPaymentViewControllerDelegate.h
+++ b/CardIO/CardIOPaymentViewControllerDelegate.h
@@ -1,6 +1,6 @@
 //
 //  CardIOPaymentViewControllerDelegate.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIOUtilities.h b/CardIO/CardIOUtilities.h
index a3a88b1..625a904 100644
--- a/CardIO/CardIOUtilities.h
+++ b/CardIO/CardIOUtilities.h
@@ -1,6 +1,6 @@
 //
 //  CardIOUtilities.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIOView.h b/CardIO/CardIOView.h
index a0f55d6..afd476d 100644
--- a/CardIO/CardIOView.h
+++ b/CardIO/CardIOView.h
@@ -1,6 +1,6 @@
 //
 //  CardIOView.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/CardIOViewDelegate.h b/CardIO/CardIOViewDelegate.h
index c030c08..55eff08 100644
--- a/CardIO/CardIOViewDelegate.h
+++ b/CardIO/CardIOViewDelegate.h
@@ -1,6 +1,6 @@
 //
 //  CardIOViewDelegate.h
-//  Version 5.1.0
+//  Version 5.1.1
 //
 //  See the file "LICENSE.md" for the full license governing this code.
 //
diff --git a/CardIO/libCardIO.a b/CardIO/libCardIO.a
index 82ff9e4..bc875c9 100644
Binary files a/CardIO/libCardIO.a and b/CardIO/libCardIO.a differ
diff --git a/release_notes.txt b/release_notes.txt
index 6c47ca8..e0795f2 100644
--- a/release_notes.txt
+++ b/release_notes.txt
@@ -1,6 +1,13 @@
 card.io iOS SDK release notes
 =============================
 
+5.1.1 (Wed 8/26/2015)
+
+* Update CocoaPods podspec to use `vendored_libraries`.
+    (https://github.com/card-io/card.io-iOS-SDK/pull/126)
+
+--
+
 5.1.0 (Sun 7/12/2015)
 
 * Update project and sample apps for Xcode 6.4.