diff --git a/AppAuth.podspec b/AppAuth.podspec
index 4aeae48b5..f023a4fa3 100644
--- a/AppAuth.podspec
+++ b/AppAuth.podspec
@@ -31,8 +31,10 @@ It follows the OAuth 2.0 for Native Apps best current practice
   #       classes of AppAuth with tokens on watchOS and tvOS, but currently the
   #       library won't help you obtain authorization grants on those platforms.
 
-  s.ios.deployment_target = "7.0"
-  s.osx.deployment_target = "10.9"
+  ios_deployment_target = "9.0"
+  osx_deployment_target = "10.12"
+  s.ios.deployment_target = ios_deployment_target
+  s.osx.deployment_target = osx_deployment_target
   s.watchos.deployment_target = "2.0"
   s.tvos.deployment_target = "9.0"
 
@@ -52,13 +54,13 @@ It follows the OAuth 2.0 for Native Apps best current practice
     
     # iOS
     externalUserAgent.ios.source_files      = "Source/AppAuth/iOS/**/*.{h,m}"
-    externalUserAgent.ios.deployment_target = "7.0"
+    externalUserAgent.ios.deployment_target = ios_deployment_target
     externalUserAgent.ios.frameworks        = "SafariServices"
     externalUserAgent.ios.weak_frameworks   = "AuthenticationServices"
 
     # macOS
     externalUserAgent.osx.source_files      = "Source/AppAuth/macOS/**/*.{h,m}"
-    externalUserAgent.osx.deployment_target = '10.9'
+    externalUserAgent.osx.deployment_target = osx_deployment_target
     externalUserAgent.osx.weak_frameworks   = "AuthenticationServices"
   end
   
diff --git a/Package.swift b/Package.swift
index b031680df..ae72258ac 100644
--- a/Package.swift
+++ b/Package.swift
@@ -23,7 +23,7 @@ import PackageDescription
 let package = Package(
     name: "AppAuth",
     platforms: [
-        .macOS(.v10_10),
+        .macOS(.v10_12),
         .iOS(.v9),
         .tvOS(.v9),
         .watchOS(.v2)