diff --git a/Example/Podfile b/Example/Podfile
index ae5fd62..f824c8e 100644
--- a/Example/Podfile
+++ b/Example/Podfile
@@ -1,5 +1,5 @@
 source 'https://cdn.cocoapods.org/'
-platform :ios, '8.0'
+platform :ios, '9.0'
 
 target 'PINOperationExample' do
   pod 'PINOperation', :path => '../'
diff --git a/PINOperation.podspec b/PINOperation.podspec
index d99ffc6..bd55486 100644
--- a/PINOperation.podspec
+++ b/PINOperation.podspec
@@ -8,7 +8,7 @@ Pod::Spec.new do |s|
   s.license       = { :type => 'Apache 2.0', :file => 'LICENSE.txt' }
   s.requires_arc  = true
   s.frameworks    = 'Foundation'
-  s.ios.deployment_target = '8.0'
+  s.ios.deployment_target = '9.0'
   s.osx.deployment_target = '10.8'
   s.tvos.deployment_target = '9.0'
   s.watchos.deployment_target = '2.0'
diff --git a/PINOperation.xcodeproj/project.pbxproj b/PINOperation.xcodeproj/project.pbxproj
index ddcb88c..62cc571 100644
--- a/PINOperation.xcodeproj/project.pbxproj
+++ b/PINOperation.xcodeproj/project.pbxproj
@@ -675,7 +675,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -728,7 +728,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
diff --git a/README.md b/README.md
index c7ac84e..94a1235 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Add the following line to your `Cartfile` and run `carthage update --platform io
 
 ## Requirements
 
-__PINOperation__ requires iOS 8.0, tvOS 9.0, macOS 10.8 or watchOS 2.0 and greater.
+__PINOperation__ requires iOS 9.0, tvOS 9.0, macOS 10.8 or watchOS 2.0 and greater.
 
 ## Contact