diff --git a/dist/index.js b/dist/index.js
index f510d10..a3e4d73 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -17087,7 +17087,11 @@ class DotnetCoreInstaller {
             if (releasesInfo.length === 0) {
                 throw new Error(`Could not find info for version ${versionParts.join('.')} at ${DotNetCoreIndexUrl}`);
             }
-            return releasesInfo[0]['releases.json'];
+            const releaseInfo = releasesInfo[0];
+            if (releaseInfo['support-phase'] === 'eol') {
+                core.warning(`${releaseInfo['product']} ${releaseInfo['channel-version']} is no longer supported and may not work properly.`);
+            }
+            return releaseInfo['releases.json'];
         });
     }
 }
diff --git a/src/installer.ts b/src/installer.ts
index aa2b45c..deddaac 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -283,7 +283,14 @@ export class DotnetCoreInstaller {
       );
     }
 
-    return releasesInfo[0]['releases.json'];
+    const releaseInfo = releasesInfo[0];
+    if (releaseInfo['support-phase'] === 'eol') {
+      core.warning(
+        `${releaseInfo['product']} ${releaseInfo['channel-version']} is no longer supported and may not work properly.`
+      );
+    }
+
+    return releaseInfo['releases.json'];
   }
 
   private version: string;