diff -Naurp dotnet-v2.1.526-SDK-orig/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json dotnet-v2.1.526-SDK/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
--- dotnet-v2.1.526-SDK-orig/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json	2021-07-29 06:45:17.000000000 -0700
+++ dotnet-v2.1.526-SDK/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json	2021-08-12 09:38:44.071253522 -0700
@@ -7535,6 +7535,131 @@
     "any",
     "base"
   ],
+  "rocky": [
+    "rocky",
+    "rhel",
+    "linux",
+    "unix",
+    "any",
+    "base"
+  ],
+  "rocky-corert": [
+    "rocky-corert",
+    "rocky",
+    "rhel-corert",
+    "rhel",
+    "linux-corert",
+    "linux",
+    "unix-corert",
+    "unix",
+    "corert",
+    "any",
+    "base"
+  ],
+  "rocky-x64": [
+    "rocky-x64",
+    "rocky",
+    "rhel-x64",
+    "rhel",
+    "linux-x64",
+    "linux",
+    "unix-x64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "rocky-x64-corert": [
+    "rocky-x64-corert",
+    "rocky-corert",
+    "rocky-x64",
+    "rhel-x64-corert",
+    "rocky",
+    "rhel-corert",
+    "rhel-x64",
+    "linux-x64-corert",
+    "rhel",
+    "linux-corert",
+    "linux-x64",
+    "unix-x64-corert",
+    "linux",
+    "unix-corert",
+    "unix-x64",
+    "unix",
+    "corert",
+    "any",
+    "base"
+  ],
+  "rocky.8": [
+    "rocky.8",
+    "rocky",
+    "rhel.8",
+    "rhel",
+    "linux",
+    "unix",
+    "any",
+    "base"
+  ],
+  "rocky.8-corert": [
+    "rocky.8-corert",
+    "rocky.8",
+    "rocky-corert",
+    "rhel.8-corert",
+    "rocky",
+    "rhel.8",
+    "rhel-corert",
+    "rhel",
+    "linux-corert",
+    "linux",
+    "unix-corert",
+    "unix",
+    "corert",
+    "any",
+    "base"
+  ],
+  "rocky.8-x64": [
+    "rocky.8-x64",
+    "rocky.8",
+    "rocky-x64",
+    "rhel.8-x64",
+    "rocky",
+    "rhel.8",
+    "rhel-x64",
+    "rhel",
+    "linux-x64",
+    "linux",
+    "unix-x64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "rocky.8-x64-corert": [
+    "rocky.8-x64-corert",
+    "rocky.8-corert",
+    "rocky.8-x64",
+    "rocky.8",
+    "rocky-x64-corert",
+    "rocky-corert",
+    "rhel.8-corert",
+    "rocky-x64",
+    "rhel.8-x64",
+    "rocky",
+    "rhel.8",
+    "rhel-x64-corert",
+    "rhel-corert",
+    "rhel-x64",
+    "rhel",
+    "linux-x64-corert",
+    "linux-corert",
+    "linux-x64",
+    "linux",
+    "unix-x64-corert",
+    "unix-corert",
+    "unix-x64",
+    "unix",
+    "corert",
+    "any",
+    "base"
+  ],
   "sles": [
     "sles",
     "linux",
@@ -12397,4 +12522,4 @@
     "any",
     "base"
   ]
-}
\ No newline at end of file
+}
diff -Naurp dotnet-v2.1.526-SDK-orig/src/corefx/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props dotnet-v2.1.526-SDK/src/corefx/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
--- dotnet-v2.1.526-SDK-orig/src/corefx/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props	2021-07-29 06:45:17.000000000 -0700
+++ dotnet-v2.1.526-SDK/src/corefx/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props	2021-08-12 09:39:51.937129335 -0700
@@ -116,6 +116,14 @@
       <Versions>8;8.0;8.1</Versions>
     </RuntimeGroup>
 
+    <RuntimeGroup Include="rocky">
+      <Parent>rhel</Parent>
+      <Architectures>x64</Architectures>
+      <Versions>8</Versions>
+      <ApplyVersionsToParent>true</ApplyVersionsToParent>
+      <TreatVersionsAsCompatible>false</TreatVersionsAsCompatible>
+    </RuntimeGroup>
+
     <RuntimeGroup Include="sles">
       <Parent>linux</Parent>
       <Architectures>x64</Architectures>
diff -Naurp dotnet-v2.1.526-SDK-orig/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.json dotnet-v2.1.526-SDK/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.json
--- dotnet-v2.1.526-SDK-orig/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.json	2021-07-29 06:45:17.000000000 -0700
+++ dotnet-v2.1.526-SDK/src/corefx/pkg/Microsoft.NETCore.Platforms/runtime.json	2021-08-12 09:40:07.579331201 -0700
@@ -2665,6 +2665,58 @@
         "rhel.8.0-x64-corert"
       ]
     },
+    "rocky": {
+      "#import": [
+        "rhel"
+      ]
+    },
+    "rocky-corert": {
+      "#import": [
+        "rocky",
+        "rhel-corert"
+      ]
+    },
+    "rocky-x64": {
+      "#import": [
+        "rocky",
+        "rhel-x64"
+      ]
+    },
+    "rocky-x64-corert": {
+      "#import": [
+        "rocky-corert",
+        "rocky-x64",
+        "rhel-x64-corert"
+      ]
+    },
+    "rocky.8": {
+      "#import": [
+        "rocky",
+        "rhel.8"
+      ]
+    },
+    "rocky.8-corert": {
+      "#import": [
+        "rocky.8",
+        "rocky-corert",
+        "rhel.8-corert"
+      ]
+    },
+    "rocky.8-x64": {
+      "#import": [
+        "rocky.8",
+        "rocky-x64",
+        "rhel.8-x64"
+      ]
+    },
+    "rocky.8-x64-corert": {
+      "#import": [
+        "rocky.8-corert",
+        "rocky.8-x64",
+        "rocky.8",
+        "rocky-x64-corert"
+      ]
+    },
     "sles": {
       "#import": [
         "linux"
@@ -4630,4 +4682,4 @@
       ]
     }
   }
-}
\ No newline at end of file
+}