diff --git a/build.psm1 b/build.psm1
index d8805cf92e..2f65755e1b 100644
--- a/build.psm1
+++ b/build.psm1
@@ -95,7 +95,8 @@ function Start-PSBuild {
                      "win7-x86",
                      "win81-x64",
                      "win10-x64",
-                     "osx.10.11-x64")]
+                     "osx.10.11-x64",
+                     "osx.10.12-x64")]
         [Parameter(ParameterSetName='CoreCLR')]
         [string]$Runtime,
 
@@ -456,7 +457,8 @@ function New-PSOptions {
                      "win7-x64",
                      "win81-x64",
                      "win10-x64",
-                     "osx.10.11-x64")]
+                     "osx.10.11-x64",
+                     "osx.10.12-x64")]
         [string]$Runtime,
 
         [switch]$Publish,
@@ -2622,7 +2624,8 @@ function Start-CrossGen {
                      "win7-x64",
                      "win81-x64",
                      "win10-x64",
-                     "osx.10.11-x64")]
+                     "osx.10.11-x64",
+                     "osx.10.12-x64")]
         [string]
         $Runtime
     )
diff --git a/src/ResGen/project.json b/src/ResGen/project.json
index 6ad96f2c74..7d8d7e5e21 100644
--- a/src/ResGen/project.json
+++ b/src/ResGen/project.json
@@ -27,6 +27,7 @@
         "win7-x64": { },
         "win81-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/src/TypeCatalogGen/project.json b/src/TypeCatalogGen/project.json
index ba658a7f93..121f60982d 100644
--- a/src/TypeCatalogGen/project.json
+++ b/src/TypeCatalogGen/project.json
@@ -52,6 +52,7 @@
         "win7-x64": { },
         "win81-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/src/TypeCatalogParser/project.json b/src/TypeCatalogParser/project.json
index e385685ba4..40c00a9a8b 100644
--- a/src/TypeCatalogParser/project.json
+++ b/src/TypeCatalogParser/project.json
@@ -49,6 +49,7 @@
         "win7-x86": { },
         "win7-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/src/powershell-unix/project.json b/src/powershell-unix/project.json
index 511f8f7740..412c02e680 100644
--- a/src/powershell-unix/project.json
+++ b/src/powershell-unix/project.json
@@ -103,6 +103,7 @@
         "debian.8-x64": { },
         "centos.7-x64": { },
         "fedora.24-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/test/PSReadLine/project.json b/test/PSReadLine/project.json
index 741ab1e38a..9446be0883 100644
--- a/test/PSReadLine/project.json
+++ b/test/PSReadLine/project.json
@@ -29,6 +29,7 @@
         "win7-x86": { },
         "win7-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/test/csharp/project.json b/test/csharp/project.json
index 16930621b2..4515591b1e 100644
--- a/test/csharp/project.json
+++ b/test/csharp/project.json
@@ -35,6 +35,7 @@
         "win7-x64": { },
         "win81-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/test/tools/CreateChildProcess/project.json b/test/tools/CreateChildProcess/project.json
index 90dc5ed0e6..e1f5ddd4f1 100644
--- a/test/tools/CreateChildProcess/project.json
+++ b/test/tools/CreateChildProcess/project.json
@@ -25,6 +25,7 @@
         "win7-x64": { },
         "win81-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }
diff --git a/test/tools/EchoArgs/project.json b/test/tools/EchoArgs/project.json
index 8273c36659..98521b4b6d 100644
--- a/test/tools/EchoArgs/project.json
+++ b/test/tools/EchoArgs/project.json
@@ -25,6 +25,7 @@
         "win7-x64": { },
         "win81-x64": { },
         "win10-x64": { },
-        "osx.10.11-x64": { }
+        "osx.10.11-x64": { },
+        "osx.10.12-x64": { }
     }
 }