diff --git a/dist/index.js b/dist/index.js
index d008744b..aa18752e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -253,15 +253,29 @@ function removeLabels(client, prNumber, labels) {
 
 "use strict";
 
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
 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;
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
     return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.issue = exports.issueCommand = void 0;
 const os = __importStar(__nccwpck_require__(2087));
+const utils_1 = __nccwpck_require__(5278);
 /**
  * Commands
  *
@@ -315,28 +329,14 @@ 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')
@@ -352,6 +352,25 @@ function escapeProperty(s) {
 
 "use strict";
 
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
 var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
     function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
     return new (P || (P = Promise))(function (resolve, reject) {
@@ -361,15 +380,11 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
         step((generator = generator.apply(thisArg, _arguments || [])).next());
     });
 };
-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 }));
+exports.getState = exports.saveState = exports.group = exports.endGroup = exports.startGroup = exports.info = exports.warning = exports.error = exports.debug = exports.isDebug = exports.setFailed = exports.setCommandEcho = exports.setOutput = exports.getBooleanInput = exports.getMultilineInput = exports.getInput = exports.addPath = exports.setSecret = exports.exportVariable = exports.ExitCode = void 0;
 const command_1 = __nccwpck_require__(7351);
+const file_command_1 = __nccwpck_require__(717);
+const utils_1 = __nccwpck_require__(5278);
 const os = __importStar(__nccwpck_require__(2087));
 const path = __importStar(__nccwpck_require__(5622));
 /**
@@ -396,9 +411,17 @@ 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;
 /**
@@ -414,12 +437,20 @@ 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;
 /**
- * Gets the value of an input.  The value is also trimmed.
+ * Gets the value of an input.
+ * Unless trimWhitespace is set to false in InputOptions, the value is also trimmed.
+ * Returns an empty string if the value is not defined.
  *
  * @param     name     name of the input to get
  * @param     options  optional. See InputOptions.
@@ -430,9 +461,49 @@ function getInput(name, options) {
     if (options && options.required && !val) {
         throw new Error(`Input required and not supplied: ${name}`);
     }
+    if (options && options.trimWhitespace === false) {
+        return val;
+    }
     return val.trim();
 }
 exports.getInput = getInput;
+/**
+ * Gets the values of an multiline input.  Each value is also trimmed.
+ *
+ * @param     name     name of the input to get
+ * @param     options  optional. See InputOptions.
+ * @returns   string[]
+ *
+ */
+function getMultilineInput(name, options) {
+    const inputs = getInput(name, options)
+        .split('\n')
+        .filter(x => x !== '');
+    return inputs;
+}
+exports.getMultilineInput = getMultilineInput;
+/**
+ * Gets the input value of the boolean type in the YAML 1.2 "core schema" specification.
+ * Support boolean input list: `true | True | TRUE | false | False | FALSE` .
+ * The return value is also in boolean type.
+ * ref: https://yaml.org/spec/1.2/spec.html#id2804923
+ *
+ * @param     name     name of the input to get
+ * @param     options  optional. See InputOptions.
+ * @returns   boolean
+ */
+function getBooleanInput(name, options) {
+    const trueValue = ['true', 'True', 'TRUE'];
+    const falseValue = ['false', 'False', 'FALSE'];
+    const val = getInput(name, options);
+    if (trueValue.includes(val))
+        return true;
+    if (falseValue.includes(val))
+        return false;
+    throw new TypeError(`Input does not meet YAML 1.2 "Core Schema" specification: ${name}\n` +
+        `Support boolean input list: \`true | True | TRUE | false | False | FALSE\``);
+}
+exports.getBooleanInput = getBooleanInput;
 /**
  * Sets the value of an output.
  *
@@ -441,6 +512,7 @@ exports.getInput = getInput;
  */
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 function setOutput(name, value) {
+    process.stdout.write(os.EOL);
     command_1.issueCommand('set-output', { name }, value);
 }
 exports.setOutput = setOutput;
@@ -576,6 +648,82 @@ exports.getState = getState;
 
 /***/ }),
 
+/***/ 717:
+/***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
+
+"use strict";
+
+// For internal use, subject to change.
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.issueCommand = void 0;
+// We use any as a valid input type
+/* eslint-disable @typescript-eslint/no-explicit-any */
+const fs = __importStar(__nccwpck_require__(5747));
+const os = __importStar(__nccwpck_require__(2087));
+const utils_1 = __nccwpck_require__(5278);
+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
+
+/***/ }),
+
+/***/ 5278:
+/***/ ((__unused_webpack_module, exports) => {
+
+"use strict";
+
+// We use any as a valid input type
+/* eslint-disable @typescript-eslint/no-explicit-any */
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.toCommandValue = void 0;
+/**
+ * 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
+
+/***/ }),
+
 /***/ 4087:
 /***/ ((__unused_webpack_module, exports, __nccwpck_require__) => {
 
diff --git a/package-lock.json b/package-lock.json
index fedbf44d..2f04a281 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "version": "3.0.1",
       "license": "MIT",
       "dependencies": {
-        "@actions/core": "^1.2.4",
+        "@actions/core": "^1.4.0",
         "@actions/github": "^2.2.0",
         "js-yaml": "^4.1.0",
         "minimatch": "^3.0.4"
@@ -26,9 +26,9 @@
       }
     },
     "node_modules/@actions/core": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.4.tgz",
-      "integrity": "sha512-YJCEq8BE3CdN8+7HPZ/4DxJjk/OkZV2FFIf+DlZTC/4iBlzYCD5yjRR6eiOS5llO11zbRltIRuKAjMKaWTE6cg=="
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.4.0.tgz",
+      "integrity": "sha512-CGx2ilGq5i7zSLgiiGUtBCxhRRxibJYU6Fim0Q1Wg2aQL2LTnF27zbqZOrxfvFQ55eSBW0L8uVStgtKMpa0Qlg=="
     },
     "node_modules/@actions/github": {
       "version": "2.2.0",
@@ -11470,9 +11470,9 @@
   },
   "dependencies": {
     "@actions/core": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.4.tgz",
-      "integrity": "sha512-YJCEq8BE3CdN8+7HPZ/4DxJjk/OkZV2FFIf+DlZTC/4iBlzYCD5yjRR6eiOS5llO11zbRltIRuKAjMKaWTE6cg=="
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.4.0.tgz",
+      "integrity": "sha512-CGx2ilGq5i7zSLgiiGUtBCxhRRxibJYU6Fim0Q1Wg2aQL2LTnF27zbqZOrxfvFQ55eSBW0L8uVStgtKMpa0Qlg=="
     },
     "@actions/github": {
       "version": "2.2.0",
diff --git a/package.json b/package.json
index ceed22f8..3bd41449 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.4",
+    "@actions/core": "^1.4.0",
     "@actions/github": "^2.2.0",
     "js-yaml": "^4.1.0",
     "minimatch": "^3.0.4"