diff --git a/src/libraries/Microsoft.NETCore.Platforms/src/runtime.compatibility.json b/src/libraries/Microsoft.NETCore.Platforms/src/runtime.compatibility.json
index 5a39f5d745044..c0fddc3e86d92 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/src/runtime.compatibility.json
+++ b/src/libraries/Microsoft.NETCore.Platforms/src/runtime.compatibility.json
@@ -6040,6 +6040,78 @@
     "any",
     "base"
   ],
+  "osx.13": [
+    "osx.13",
+    "osx.12",
+    "osx.11.0",
+    "osx.10.16",
+    "osx.10.15",
+    "osx.10.14",
+    "osx.10.13",
+    "osx.10.12",
+    "osx.10.11",
+    "osx.10.10",
+    "osx",
+    "unix",
+    "any",
+    "base"
+  ],
+  "osx.13-arm64": [
+    "osx.13-arm64",
+    "osx.13",
+    "osx.12-arm64",
+    "osx.12",
+    "osx.11.0-arm64",
+    "osx.11.0",
+    "osx.10.16-arm64",
+    "osx.10.16",
+    "osx.10.15-arm64",
+    "osx.10.15",
+    "osx.10.14-arm64",
+    "osx.10.14",
+    "osx.10.13-arm64",
+    "osx.10.13",
+    "osx.10.12-arm64",
+    "osx.10.12",
+    "osx.10.11-arm64",
+    "osx.10.11",
+    "osx.10.10-arm64",
+    "osx.10.10",
+    "osx-arm64",
+    "osx",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "osx.13-x64": [
+    "osx.13-x64",
+    "osx.13",
+    "osx.12-x64",
+    "osx.12",
+    "osx.11.0-x64",
+    "osx.11.0",
+    "osx.10.16-x64",
+    "osx.10.16",
+    "osx.10.15-x64",
+    "osx.10.15",
+    "osx.10.14-x64",
+    "osx.10.14",
+    "osx.10.13-x64",
+    "osx.10.13",
+    "osx.10.12-x64",
+    "osx.10.12",
+    "osx.10.11-x64",
+    "osx.10.11",
+    "osx.10.10-x64",
+    "osx.10.10",
+    "osx-x64",
+    "osx",
+    "unix-x64",
+    "unix",
+    "any",
+    "base"
+  ],
   "rhel": [
     "rhel",
     "linux",
diff --git a/src/libraries/Microsoft.NETCore.Platforms/src/runtime.json b/src/libraries/Microsoft.NETCore.Platforms/src/runtime.json
index 17a0a1c4db0b7..278e321ef0416 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/src/runtime.json
+++ b/src/libraries/Microsoft.NETCore.Platforms/src/runtime.json
@@ -2360,6 +2360,23 @@
         "osx.11.0-x64"
       ]
     },
+    "osx.13": {
+      "#import": [
+        "osx.12"
+      ]
+    },
+    "osx.13-arm64": {
+      "#import": [
+        "osx.13",
+        "osx.12-arm64"
+      ]
+    },
+    "osx.13-x64": {
+      "#import": [
+        "osx.13",
+        "osx.12-x64"
+      ]
+    },
     "rhel": {
       "#import": [
         "linux"
diff --git a/src/libraries/Microsoft.NETCore.Platforms/src/runtimeGroups.props b/src/libraries/Microsoft.NETCore.Platforms/src/runtimeGroups.props
index 38deb3f186335..a99c11f8bc31f 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/src/runtimeGroups.props
+++ b/src/libraries/Microsoft.NETCore.Platforms/src/runtimeGroups.props
@@ -173,7 +173,7 @@
     <RuntimeGroup Include="osx">
       <Parent>unix</Parent>
       <Architectures>x64;arm64</Architectures>
-      <Versions>10.10;10.11;10.12;10.13;10.14;10.15;10.16;11.0;12</Versions>
+      <Versions>10.10;10.11;10.12;10.13;10.14;10.15;10.16;11.0;12;13</Versions>
     </RuntimeGroup>
 
     <RuntimeGroup Include="freebsd">
diff --git a/src/libraries/Microsoft.NETCore.Platforms/tests/GenerateRuntimeGraphTests.cs b/src/libraries/Microsoft.NETCore.Platforms/tests/GenerateRuntimeGraphTests.cs
index bce0965cf0aa8..253b507b28e0b 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/tests/GenerateRuntimeGraphTests.cs
+++ b/src/libraries/Microsoft.NETCore.Platforms/tests/GenerateRuntimeGraphTests.cs
@@ -210,14 +210,15 @@ public void CanAddArchitectureToExistingGroups()
         [Fact]
         public void CanAddArchitectureAndVersionToExistingGroups()
         {
-            var additionalRIDs = new[] { "osx.12-powerpc" };
+            var additionalRIDs = new[] { "osx.13-powerpc" };
             var expectedAdditions = new[]
             {
-                new RuntimeDescription("osx.12-powerpc", new[] { "osx.12", "osx.11.0-powerpc" }),
-                new RuntimeDescription("osx.12-arm64", new[] { "osx.12", "osx.11.0-arm64" }),
-                new RuntimeDescription("osx.12-x64", new[] { "osx.12", "osx.11.0-x64" }),
-                new RuntimeDescription("osx.12", new[] { "osx.11.0" }),
+                new RuntimeDescription("osx.13-powerpc", new[] { "osx.13", "osx.12-powerpc" }),
+                new RuntimeDescription("osx.13-arm64", new[] { "osx.13", "osx.12-arm64" }),
+                new RuntimeDescription("osx.13-x64", new[] { "osx.13", "osx.12-x64" }),
+                new RuntimeDescription("osx.13", new[] { "osx.12" }),
                 // our RID model doesn't give priority to architecture, so the new architecture is applied to all past versions
+                new RuntimeDescription("osx.12-powerpc", new[] { "osx.12", "osx.11.0-powerpc" }),
                 new RuntimeDescription("osx.11.0-powerpc", new[] { "osx.11.0", "osx.10.16-powerpc" }),
                 new RuntimeDescription("osx.10.16-powerpc", new[] { "osx.10.16", "osx.10.15-powerpc" }),
                 new RuntimeDescription("osx.10.15-powerpc", new[] { "osx.10.15", "osx.10.14-powerpc" }),