diff --git a/package.json b/package.json
index e9f04124..9633b2da 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,8 @@
   },
   "dependencies": {
     "@actions/core": "1.10.1",
-    "@actions/exec": "1.1.1"
+    "@actions/exec": "1.1.1",
+    "lodash": "^4.17.21"
   },
   "devDependencies": {
     "@commitlint/cli": "19.5.0",
diff --git a/src/input.ts b/src/input.ts
index 3b8c8791..5f837608 100644
--- a/src/input.ts
+++ b/src/input.ts
@@ -1,5 +1,6 @@
 import * as core from '@actions/core';
 import path from 'path';
+import _ from 'lodash';
 
 interface EnvironmentVariable {
   key: string;
@@ -29,7 +30,7 @@ class Input {
   constructor() {
     const envRegexInput = core.getInput('env-regex');
     const envRegex = envRegexInput
-      ? new RegExp(envRegexInput)
+      ? new RegExp(_.escapeRegExp(envRegexInput))
       : this.options.envRegex;
     this._environmentVariables = new Map(
       Object.entries(process.env)