diff --git a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
index d40d1e1ac5a1ad..ecadced6e121de 100644
--- a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
+++ b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
@@ -1106,6 +1106,17 @@
   "base": [
     "base"
   ],
+  "browser": [
+    "browser",
+    "any",
+    "base"
+  ],
+  "browser-wasm": [
+    "browser-wasm",
+    "browser",
+    "any",
+    "base"
+  ],
   "centos": [
     "centos",
     "rhel",
diff --git a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json
index 0b368beb36e6f1..02151ad0b20c66 100644
--- a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json
+++ b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json
@@ -391,6 +391,16 @@
     "base": {
       "#import": []
     },
+    "browser": {
+      "#import": [
+        "any"
+      ]
+    },
+    "browser-wasm": {
+      "#import": [
+        "browser"
+      ]
+    },
     "centos": {
       "#import": [
         "rhel"
diff --git a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
index 4d7d03bf1d3ed2..fd339ac8c0df79 100644
--- a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
+++ b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
@@ -30,6 +30,11 @@
       <Architectures>x64</Architectures>
     </RuntimeGroup>
 
+    <RuntimeGroup Include="browser">
+      <Parent>any</Parent>
+      <Architectures>wasm</Architectures>
+    </RuntimeGroup>
+
     <RuntimeGroup Include="centos">
       <Parent>rhel</Parent>
       <Architectures>x64</Architectures>