diff --git a/dist/index.js b/dist/index.js
index 4cb8d99..8859f58 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1649,7 +1649,7 @@ class HttpClient {
         }
         const usingSsl = parsedUrl.protocol === 'https:';
         proxyAgent = new undici_1.ProxyAgent(Object.assign({ uri: proxyUrl.href, pipelining: !this._keepAlive ? 0 : 1 }, ((proxyUrl.username || proxyUrl.password) && {
-            token: `${proxyUrl.username}:${proxyUrl.password}`
+            token: `Basic ${Buffer.from(`${proxyUrl.username}:${proxyUrl.password}`).toString('base64')}`
         })));
         this._proxyAgentDispatcher = proxyAgent;
         if (usingSsl && this._ignoreSslError) {
@@ -1763,11 +1763,11 @@ function getProxyUrl(reqUrl) {
     })();
     if (proxyVar) {
         try {
-            return new URL(proxyVar);
+            return new DecodedURL(proxyVar);
         }
         catch (_a) {
             if (!proxyVar.startsWith('http://') && !proxyVar.startsWith('https://'))
-                return new URL(`http://${proxyVar}`);
+                return new DecodedURL(`http://${proxyVar}`);
         }
     }
     else {
@@ -1826,6 +1826,19 @@ function isLoopbackAddress(host) {
         hostLower.startsWith('[::1]') ||
         hostLower.startsWith('[0:0:0:0:0:0:0:1]'));
 }
+class DecodedURL extends URL {
+    constructor(url, base) {
+        super(url, base);
+        this._decodedUsername = decodeURIComponent(super.username);
+        this._decodedPassword = decodeURIComponent(super.password);
+    }
+    get username() {
+        return this._decodedUsername;
+    }
+    get password() {
+        return this._decodedPassword;
+    }
+}
 //# sourceMappingURL=proxy.js.map
 
 /***/ }),
diff --git a/package-lock.json b/package-lock.json
index 60ca3db..0790e80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,9 +12,9 @@
         "@actions/core": "^1.10.1"
       },
       "devDependencies": {
-        "@actions/attest": "^1.4.0",
+        "@actions/attest": "^1.4.1",
         "@types/jest": "^29.5.12",
-        "@types/node": "^22.4.1",
+        "@types/node": "^22.5.0",
         "@typescript-eslint/eslint-plugin": "^7.17.0",
         "@typescript-eslint/parser": "^7.18.0",
         "@vercel/ncc": "^0.38.1",
@@ -27,7 +27,7 @@
         "markdownlint-cli": "^0.41.0",
         "prettier": "^3.3.3",
         "prettier-eslint": "^16.3.0",
-        "ts-jest": "^29.2.4",
+        "ts-jest": "^29.2.5",
         "typescript": "^5.5.4"
       },
       "engines": {
@@ -44,14 +44,14 @@
       }
     },
     "node_modules/@actions/attest": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/@actions/attest/-/attest-1.4.0.tgz",
-      "integrity": "sha512-vyiv8VuONuIqktf4DdLqYL5sKEPPNTBlmjik+DP+7HqTiOgmrBa4Nn1eKh50aHjxa6tz+VSIYPaw0XG3Zc7zJw==",
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/@actions/attest/-/attest-1.4.1.tgz",
+      "integrity": "sha512-IEwE9SxHUGZUogp7s9nb8KCcj+83VQ62TR7r6J/HUh94KN+nU+V9AvqnEg1sGCKmFo9BUVX8lV7D+M2tdfVxaw==",
       "dev": true,
       "dependencies": {
         "@actions/core": "^1.10.1",
         "@actions/github": "^6.0.0",
-        "@actions/http-client": "^2.2.1",
+        "@actions/http-client": "^2.2.3",
         "@octokit/plugin-retry": "^6.0.1",
         "@sigstore/bundle": "^2.3.2",
         "@sigstore/sign": "^2.3.2",
@@ -80,9 +80,9 @@
       }
     },
     "node_modules/@actions/http-client": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/@actions/http-client/-/http-client-2.2.1.tgz",
-      "integrity": "sha512-KhC/cZsq7f8I4LfZSJKgCvEwfkE8o1538VoBeoGzokVLLnbFDEAdFD3UhoMklxo2un9NJVBdANOresx7vTHlHw==",
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/@actions/http-client/-/http-client-2.2.3.tgz",
+      "integrity": "sha512-mx8hyJi/hjFvbPokCg4uRd4ZX78t+YyRPtnKWwIl+RzNaVuFpQHfmlGVfsKEJN8LwTCvL+DfVgAM04XaHkm6bA==",
       "dependencies": {
         "tunnel": "^0.0.6",
         "undici": "^5.25.4"
@@ -1824,9 +1824,9 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "22.4.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.4.1.tgz",
-      "integrity": "sha512-1tbpb9325+gPnKK0dMm+/LMriX0vKxf6RnB0SZUqfyVkQ4fMgUSySqhxE/y8Jvs4NyF1yHzTfG9KlnkIODxPKg==",
+      "version": "22.5.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.5.0.tgz",
+      "integrity": "sha512-DkFrJOe+rfdHTqqMg0bSNlGlQ85hSoh2TPzZyhHsXnMtligRWpxUySiyw8FY14ITt24HVCiQPWxS3KO/QlGmWg==",
       "dev": true,
       "dependencies": {
         "undici-types": "~6.19.2"
@@ -7583,13 +7583,10 @@
       "optional": true
     },
     "node_modules/semver": {
-      "version": "7.6.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.0.tgz",
-      "integrity": "sha512-EnwXhrlwXMk9gKu5/flx5sv/an57AkRplG3hTK68W7FRDN+k+OWBj65M7719OkA82XLBxrcX0KSHj+X5COhOVg==",
+      "version": "7.6.3",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz",
+      "integrity": "sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==",
       "dev": true,
-      "dependencies": {
-        "lru-cache": "^6.0.0"
-      },
       "bin": {
         "semver": "bin/semver.js"
       },
@@ -7597,24 +7594,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/semver/node_modules/lru-cache": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
-      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
-      "dev": true,
-      "dependencies": {
-        "yallist": "^4.0.0"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
-    "node_modules/semver/node_modules/yallist": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
-      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
-      "dev": true
-    },
     "node_modules/set-function-length": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/set-function-length/-/set-function-length-1.2.2.tgz",
@@ -8133,20 +8112,20 @@
       }
     },
     "node_modules/ts-jest": {
-      "version": "29.2.4",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.2.4.tgz",
-      "integrity": "sha512-3d6tgDyhCI29HlpwIq87sNuI+3Q6GLTTCeYRHCs7vDz+/3GCMwEtV9jezLyl4ZtnBgx00I7hm8PCP8cTksMGrw==",
+      "version": "29.2.5",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.2.5.tgz",
+      "integrity": "sha512-KD8zB2aAZrcKIdGk4OwpJggeLcH1FgrICqDSROWqlnJXGCXK4Mn6FcdK2B6670Xr73lHMG1kHw8R87A0ecZ+vA==",
       "dev": true,
       "dependencies": {
-        "bs-logger": "0.x",
+        "bs-logger": "^0.2.6",
         "ejs": "^3.1.10",
-        "fast-json-stable-stringify": "2.x",
+        "fast-json-stable-stringify": "^2.1.0",
         "jest-util": "^29.0.0",
         "json5": "^2.2.3",
-        "lodash.memoize": "4.x",
-        "make-error": "1.x",
-        "semver": "^7.5.3",
-        "yargs-parser": "^21.0.1"
+        "lodash.memoize": "^4.1.2",
+        "make-error": "^1.3.6",
+        "semver": "^7.6.3",
+        "yargs-parser": "^21.1.1"
       },
       "bin": {
         "ts-jest": "cli.js"
diff --git a/package.json b/package.json
index 56e8e8a..446cb6c 100644
--- a/package.json
+++ b/package.json
@@ -73,9 +73,9 @@
     "@actions/core": "^1.10.1"
   },
   "devDependencies": {
-    "@actions/attest": "^1.4.0",
+    "@actions/attest": "^1.4.1",
     "@types/jest": "^29.5.12",
-    "@types/node": "^22.4.1",
+    "@types/node": "^22.5.0",
     "@typescript-eslint/eslint-plugin": "^7.17.0",
     "@typescript-eslint/parser": "^7.18.0",
     "@vercel/ncc": "^0.38.1",
@@ -88,7 +88,7 @@
     "markdownlint-cli": "^0.41.0",
     "prettier": "^3.3.3",
     "prettier-eslint": "^16.3.0",
-    "ts-jest": "^29.2.4",
+    "ts-jest": "^29.2.5",
     "typescript": "^5.5.4"
   }
 }