diff --git a/dist/index.js b/dist/index.js
index ce8f80477..46eb3be3c 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -953,6 +953,32 @@ class ExecState extends events.EventEmitter {
 
 /***/ }),
 
+/***/ 82:
+/***/ (function(__unusedmodule, exports) {
+
+"use strict";
+
+// We use any as a valid input type
+/* eslint-disable @typescript-eslint/no-explicit-any */
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * Sanitizes an input into a string so it can be passed into issueCommand safely
+ * @param input input to sanitize into a string
+ */
+function toCommandValue(input) {
+    if (input === null || input === undefined) {
+        return '';
+    }
+    else if (typeof input === 'string' || input instanceof String) {
+        return input;
+    }
+    return JSON.stringify(input);
+}
+exports.toCommandValue = toCommandValue;
+//# sourceMappingURL=utils.js.map
+
+/***/ }),
+
 /***/ 86:
 /***/ (function(__unusedmodule, exports, __webpack_require__) {
 
@@ -1003,6 +1029,42 @@ module.exports = require("os");
 
 /***/ }),
 
+/***/ 102:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+// For internal use, subject to change.
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+// We use any as a valid input type
+/* eslint-disable @typescript-eslint/no-explicit-any */
+const fs = __importStar(__webpack_require__(747));
+const os = __importStar(__webpack_require__(87));
+const utils_1 = __webpack_require__(82);
+function issueCommand(command, message) {
+    const filePath = process.env[`GITHUB_${command}`];
+    if (!filePath) {
+        throw new Error(`Unable to find environment variable for file command ${command}`);
+    }
+    if (!fs.existsSync(filePath)) {
+        throw new Error(`Missing file at path: ${filePath}`);
+    }
+    fs.appendFileSync(filePath, `${utils_1.toCommandValue(message)}${os.EOL}`, {
+        encoding: 'utf8'
+    });
+}
+exports.issueCommand = issueCommand;
+//# sourceMappingURL=file-command.js.map
+
+/***/ }),
+
 /***/ 129:
 /***/ (function(module) {
 
@@ -1348,6 +1410,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 const os = __importStar(__webpack_require__(87));
+const utils_1 = __webpack_require__(82);
 /**
  * Commands
  *
@@ -1401,28 +1464,14 @@ class Command {
         return cmdStr;
     }
 }
-/**
- * Sanitizes an input into a string so it can be passed into issueCommand safely
- * @param input input to sanitize into a string
- */
-function toCommandValue(input) {
-    if (input === null || input === undefined) {
-        return '';
-    }
-    else if (typeof input === 'string' || input instanceof String) {
-        return input;
-    }
-    return JSON.stringify(input);
-}
-exports.toCommandValue = toCommandValue;
 function escapeData(s) {
-    return toCommandValue(s)
+    return utils_1.toCommandValue(s)
         .replace(/%/g, '%25')
         .replace(/\r/g, '%0D')
         .replace(/\n/g, '%0A');
 }
 function escapeProperty(s) {
-    return toCommandValue(s)
+    return utils_1.toCommandValue(s)
         .replace(/%/g, '%25')
         .replace(/\r/g, '%0D')
         .replace(/\n/g, '%0A')
@@ -1456,6 +1505,8 @@ var __importStar = (this && this.__importStar) || function (mod) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 const command_1 = __webpack_require__(431);
+const file_command_1 = __webpack_require__(102);
+const utils_1 = __webpack_require__(82);
 const os = __importStar(__webpack_require__(87));
 const path = __importStar(__webpack_require__(622));
 /**
@@ -1482,9 +1533,17 @@ var ExitCode;
  */
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 function exportVariable(name, val) {
-    const convertedVal = command_1.toCommandValue(val);
+    const convertedVal = utils_1.toCommandValue(val);
     process.env[name] = convertedVal;
-    command_1.issueCommand('set-env', { name }, convertedVal);
+    const filePath = process.env['GITHUB_ENV'] || '';
+    if (filePath) {
+        const delimiter = '_GitHubActionsFileCommandDelimeter_';
+        const commandValue = `${name}<<${delimiter}${os.EOL}${convertedVal}${os.EOL}${delimiter}`;
+        file_command_1.issueCommand('ENV', commandValue);
+    }
+    else {
+        command_1.issueCommand('set-env', { name }, convertedVal);
+    }
 }
 exports.exportVariable = exportVariable;
 /**
@@ -1500,7 +1559,13 @@ exports.setSecret = setSecret;
  * @param inputPath
  */
 function addPath(inputPath) {
-    command_1.issueCommand('add-path', {}, inputPath);
+    const filePath = process.env['GITHUB_PATH'] || '';
+    if (filePath) {
+        file_command_1.issueCommand('PATH', inputPath);
+    }
+    else {
+        command_1.issueCommand('add-path', {}, inputPath);
+    }
     process.env['PATH'] = `${inputPath}${path.delimiter}${process.env['PATH']}`;
 }
 exports.addPath = addPath;
diff --git a/package.json b/package.json
index 31a366cef..3a1c4efb1 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   "author": "shivammathur",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.5",
+    "@actions/core": "^1.2.6",
     "@actions/exec": "^1.0.4",
     "@actions/io": "^1.0.2",
     "fs": "0.0.1-security"
diff --git a/src/scripts/darwin.sh b/src/scripts/darwin.sh
index 2a65d6cdf..cdd64002e 100644
--- a/src/scripts/darwin.sh
+++ b/src/scripts/darwin.sh
@@ -152,7 +152,7 @@ configure_composer() {
     exit 1
   fi
   composer -q global config process-timeout 0
-  echo "::add-path::/Users/$USER/.composer/vendor/bin"
+  echo "/Users/$USER/.composer/vendor/bin" >> "$GITHUB_PATH"
   if [ -n "$COMPOSER_TOKEN" ]; then
     composer -q global config github-oauth.github.com "$COMPOSER_TOKEN"
   fi
diff --git a/src/scripts/linux.sh b/src/scripts/linux.sh
index 0ec3368fd..e5305c3f0 100644
--- a/src/scripts/linux.sh
+++ b/src/scripts/linux.sh
@@ -252,7 +252,7 @@ configure_composer() {
     exit 1;
   fi
   composer -q global config process-timeout 0
-  echo "::add-path::/home/$USER/.composer/vendor/bin"
+  echo "/home/$USER/.composer/vendor/bin" >> "$GITHUB_PATH"
   if [ -n "$COMPOSER_TOKEN" ]; then
     composer -q global config github-oauth.github.com "$COMPOSER_TOKEN"
   fi
diff --git a/src/scripts/tools/grpc_php_plugin.ps1 b/src/scripts/tools/grpc_php_plugin.ps1
index ac0a74ed8..7cdee06f7 100644
--- a/src/scripts/tools/grpc_php_plugin.ps1
+++ b/src/scripts/tools/grpc_php_plugin.ps1
@@ -11,7 +11,7 @@ Function Add-Grpc_php_plugin() {
   $msys_location = Add-Msys2
   $logs = . $msys_location\usr\bin\bash -l -c "pacman -S --noconfirm mingw-w64-x86_64-grpc" >$null 2>&1
   $grpc_version = Get-ToolVersion 'Write-Output' "$logs"
-  Write-Output "::add-path::$msys_location\mingw64\bin"
+  Write-Output "$msys_location\mingw64\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8
   Write-Output "::set-output name=grpc_php_plugin_path::$msys_location\mingw64\bin\grpc_php_plugin.exe"
   Add-ToProfile $current_profile 'grpc_php_plugin' "New-Alias grpc_php_plugin $msys_location\mingw64\bin\grpc_php_plugin.exe"
   Add-Log $tick "grpc_php_plugin" "Added grpc_php_plugin $grpc_version"
diff --git a/src/scripts/win32.ps1 b/src/scripts/win32.ps1
index 6e44cbcdd..1e800acf8 100644
--- a/src/scripts/win32.ps1
+++ b/src/scripts/win32.ps1
@@ -189,7 +189,7 @@ Function Edit-ComposerConfig() {
     exit 1;
   }
   composer -q global config process-timeout 0
-  Write-Output "::add-path::$env:APPDATA\Composer\vendor\bin"
+  Write-Output "$env:APPDATA\Composer\vendor\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8
   if (Test-Path env:COMPOSER_TOKEN) {
     composer -q global config github-oauth.github.com $env:COMPOSER_TOKEN
   }