diff --git a/dist/index.js b/dist/index.js
index 18b2978..de59055 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -93,6 +93,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const mexec = __importStar(__webpack_require__(757));
 const core = __importStar(__webpack_require__(186));
 const exec = __importStar(__webpack_require__(514));
+const command_1 = __webpack_require__(241);
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
@@ -115,7 +116,7 @@ function run() {
                 }
                 const platforms = JSON.parse(res.stdout.trim());
                 core.info(`${platforms.supported.join(',')}`);
-                core.setOutput('platforms', platforms.supported.join(','));
+                setOutput('platforms', platforms.supported.join(','));
             });
             core.endGroup();
         }
@@ -124,6 +125,10 @@ function run() {
         }
     });
 }
+// FIXME: Temp fix https://github.com/actions/toolkit/issues/777
+function setOutput(name, value) {
+    command_1.issueCommand('set-output', { name }, value);
+}
 run();
 //# sourceMappingURL=main.js.map
 
diff --git a/src/main.ts b/src/main.ts
index e9f8fa8..6fac8a5 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,6 +1,7 @@
 import * as mexec from './exec';
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
+import {issueCommand} from '@actions/core/lib/command';
 
 interface Platforms {
   supported: string[];
@@ -32,7 +33,7 @@ async function run(): Promise<void> {
       }
       const platforms: Platforms = JSON.parse(res.stdout.trim());
       core.info(`${platforms.supported.join(',')}`);
-      core.setOutput('platforms', platforms.supported.join(','));
+      setOutput('platforms', platforms.supported.join(','));
     });
     core.endGroup();
   } catch (error) {
@@ -40,4 +41,9 @@ async function run(): Promise<void> {
   }
 }
 
+// FIXME: Temp fix https://github.com/actions/toolkit/issues/777
+function setOutput(name: string, value: any): void {
+  issueCommand('set-output', {name}, value);
+}
+
 run();