diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8576a39..e1ed432 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project (loosely) adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 1.0.3 - 2024-02-14
+
+### Added 
+
+- Add fallback to `GET /.well-known/jwt-issuer` in case `GET /.well-known/jwt-vc-issuer` returns error
+
+### Security
+
+- Upgrade development dependencies
+
 ## 1.0.2 - 2024-02-14
 
 ### Fixed
diff --git a/package-lock.json b/package-lock.json
index eedd084..07b172c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,27 +1,27 @@
 {
   "name": "@meeco/sd-jwt-vc",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@meeco/sd-jwt-vc",
-      "version": "1.0.2",
+      "version": "1.0.3",
       "dependencies": {
         "@meeco/sd-jwt": "^0.0.4"
       },
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-        "@typescript-eslint/eslint-plugin": "^6.7.3",
-        "@typescript-eslint/parser": "^6.7.3",
-        "esbuild": "^0.19.3",
+        "@types/jest": "^29.5.12",
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+        "@typescript-eslint/parser": "^7.0.1",
+        "esbuild": "^0.20.0",
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         "jest": "^29.7.0",
-        "jose": "^4.14.6",
+        "jose": "^5.2.2",
         "npm-run-all": "^4.1.5",
-        "prettier": "^3.0.3",
+        "prettier": "^3.2.5",
         "ts-jest": "^29.1.1",
         "ts-node": "^10.9.1",
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         "x64"
       ],
@@ -1839,9 +1839,9 @@
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     "node_modules/@types/jest": {
-      "version": "29.5.11",
-      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.11.tgz",
-      "integrity": "sha512-S2mHmYIVe13vrm6q4kN6fLYYAka15ALQki/vgDC3mIukEOx8WJlv0kQPM+d4w8Gp6u0uSdKND04IlTXBv0rwnQ==",
+      "version": "29.5.12",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.12.tgz",
+      "integrity": "sha512-eDC8bTvT/QhYdxJAulQikueigY5AsdBRH2yDKW3yveW7svY3+DzN84/2NUgkw10RTiJbWqZrTtoGVdYlvFJdLw==",
       "dev": true,
       "dependencies": {
         "expect": "^29.0.0",
@@ -1864,9 +1864,9 @@
       }
     },
     "node_modules/@types/semver": {
-      "version": "7.5.6",
-      "resolved": "https://registry.npmjs.org/@types/semver/-/semver-7.5.6.tgz",
-      "integrity": "sha512-dn1l8LaMea/IjDoHNd9J52uBbInB796CDffS6VdIxvqYCPSG0V0DzHp76GpaWnlhg88uYyPbXCDIowa86ybd5A==",
+      "version": "7.5.7",
+      "resolved": "https://registry.npmjs.org/@types/semver/-/semver-7.5.7.tgz",
+      "integrity": "sha512-/wdoPq1QqkSj9/QOeKkFquEuPzQbHTWAMPH/PaUMB+JuR31lXhlWXRZ52IpfDYVlDOUBvX09uBrPwxGT1hjNBg==",
       "dev": true
     },
     "node_modules/@types/stack-utils": {
@@ -1891,16 +1891,16 @@
       "dev": true
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.20.0.tgz",
-      "integrity": "sha512-fTwGQUnjhoYHeSF6m5pWNkzmDDdsKELYrOBxhjMrofPqCkoC2k3B2wvGHFxa1CTIqkEn88nlW1HVMztjo2K8Hg==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-7.0.1.tgz",
+      "integrity": "sha512-OLvgeBv3vXlnnJGIAgCLYKjgMEU+wBGj07MQ/nxAaON+3mLzX7mJbhRYrVGiVvFiXtwFlkcBa/TtmglHy0UbzQ==",
       "dev": true,
       "dependencies": {
         "@eslint-community/regexpp": "^4.5.1",
-        "@typescript-eslint/scope-manager": "6.20.0",
-        "@typescript-eslint/type-utils": "6.20.0",
-        "@typescript-eslint/utils": "6.20.0",
-        "@typescript-eslint/visitor-keys": "6.20.0",
+        "@typescript-eslint/scope-manager": "7.0.1",
+        "@typescript-eslint/type-utils": "7.0.1",
+        "@typescript-eslint/utils": "7.0.1",
+        "@typescript-eslint/visitor-keys": "7.0.1",
         "debug": "^4.3.4",
         "graphemer": "^1.4.0",
         "ignore": "^5.2.4",
@@ -1916,8 +1916,8 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "@typescript-eslint/parser": "^6.0.0 || ^6.0.0-alpha",
-        "eslint": "^7.0.0 || ^8.0.0"
+        "@typescript-eslint/parser": "^7.0.0",
+        "eslint": "^8.56.0"
       },
       "peerDependenciesMeta": {
         "typescript": {
@@ -1926,15 +1926,15 @@
       }
     },
     "node_modules/@typescript-eslint/parser": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-6.20.0.tgz",
-      "integrity": "sha512-bYerPDF/H5v6V76MdMYhjwmwgMA+jlPVqjSDq2cRqMi8bP5sR3Z+RLOiOMad3nsnmDVmn2gAFCyNgh/dIrfP/w==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-7.0.1.tgz",
+      "integrity": "sha512-8GcRRZNzaHxKzBPU3tKtFNing571/GwPBeCvmAUw0yBtfE2XVd0zFKJIMSWkHJcPQi0ekxjIts6L/rrZq5cxGQ==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/scope-manager": "6.20.0",
-        "@typescript-eslint/types": "6.20.0",
-        "@typescript-eslint/typescript-estree": "6.20.0",
-        "@typescript-eslint/visitor-keys": "6.20.0",
+        "@typescript-eslint/scope-manager": "7.0.1",
+        "@typescript-eslint/types": "7.0.1",
+        "@typescript-eslint/typescript-estree": "7.0.1",
+        "@typescript-eslint/visitor-keys": "7.0.1",
         "debug": "^4.3.4"
       },
       "engines": {
@@ -1945,7 +1945,7 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "eslint": "^7.0.0 || ^8.0.0"
+        "eslint": "^8.56.0"
       },
       "peerDependenciesMeta": {
         "typescript": {
@@ -1954,13 +1954,13 @@
       }
     },
     "node_modules/@typescript-eslint/scope-manager": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-6.20.0.tgz",
-      "integrity": "sha512-p4rvHQRDTI1tGGMDFQm+GtxP1ZHyAh64WANVoyEcNMpaTFn3ox/3CcgtIlELnRfKzSs/DwYlDccJEtr3O6qBvA==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-7.0.1.tgz",
+      "integrity": "sha512-v7/T7As10g3bcWOOPAcbnMDuvctHzCFYCG/8R4bK4iYzdFqsZTbXGln0cZNVcwQcwewsYU2BJLay8j0/4zOk4w==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/types": "6.20.0",
-        "@typescript-eslint/visitor-keys": "6.20.0"
+        "@typescript-eslint/types": "7.0.1",
+        "@typescript-eslint/visitor-keys": "7.0.1"
       },
       "engines": {
         "node": "^16.0.0 || >=18.0.0"
@@ -1971,13 +1971,13 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-6.20.0.tgz",
-      "integrity": "sha512-qnSobiJQb1F5JjN0YDRPHruQTrX7ICsmltXhkV536mp4idGAYrIyr47zF/JmkJtEcAVnIz4gUYJ7gOZa6SmN4g==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-7.0.1.tgz",
+      "integrity": "sha512-YtT9UcstTG5Yqy4xtLiClm1ZpM/pWVGFnkAa90UfdkkZsR1eP2mR/1jbHeYp8Ay1l1JHPyGvoUYR6o3On5Nhmw==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/typescript-estree": "6.20.0",
-        "@typescript-eslint/utils": "6.20.0",
+        "@typescript-eslint/typescript-estree": "7.0.1",
+        "@typescript-eslint/utils": "7.0.1",
         "debug": "^4.3.4",
         "ts-api-utils": "^1.0.1"
       },
@@ -1989,7 +1989,7 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "eslint": "^7.0.0 || ^8.0.0"
+        "eslint": "^8.56.0"
       },
       "peerDependenciesMeta": {
         "typescript": {
@@ -1998,9 +1998,9 @@
       }
     },
     "node_modules/@typescript-eslint/types": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-6.20.0.tgz",
-      "integrity": "sha512-MM9mfZMAhiN4cOEcUOEx+0HmuaW3WBfukBZPCfwSqFnQy0grXYtngKCqpQN339X3RrwtzspWJrpbrupKYUSBXQ==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-7.0.1.tgz",
+      "integrity": "sha512-uJDfmirz4FHib6ENju/7cz9SdMSkeVvJDK3VcMFvf/hAShg8C74FW+06MaQPODHfDJp/z/zHfgawIJRjlu0RLg==",
       "dev": true,
       "engines": {
         "node": "^16.0.0 || >=18.0.0"
@@ -2011,13 +2011,13 @@
       }
     },
     "node_modules/@typescript-eslint/typescript-estree": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-6.20.0.tgz",
-      "integrity": "sha512-RnRya9q5m6YYSpBN7IzKu9FmLcYtErkDkc8/dKv81I9QiLLtVBHrjz+Ev/crAqgMNW2FCsoZF4g2QUylMnJz+g==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-7.0.1.tgz",
+      "integrity": "sha512-SO9wHb6ph0/FN5OJxH4MiPscGah5wjOd0RRpaLvuBv9g8565Fgu0uMySFEPqwPHiQU90yzJ2FjRYKGrAhS1xig==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/types": "6.20.0",
-        "@typescript-eslint/visitor-keys": "6.20.0",
+        "@typescript-eslint/types": "7.0.1",
+        "@typescript-eslint/visitor-keys": "7.0.1",
         "debug": "^4.3.4",
         "globby": "^11.1.0",
         "is-glob": "^4.0.3",
@@ -2039,17 +2039,17 @@
       }
     },
     "node_modules/@typescript-eslint/utils": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-6.20.0.tgz",
-      "integrity": "sha512-/EKuw+kRu2vAqCoDwDCBtDRU6CTKbUmwwI7SH7AashZ+W+7o8eiyy6V2cdOqN49KsTcASWsC5QeghYuRDTyOOg==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-7.0.1.tgz",
+      "integrity": "sha512-oe4his30JgPbnv+9Vef1h48jm0S6ft4mNwi9wj7bX10joGn07QRfqIqFHoMiajrtoU88cIhXf8ahwgrcbNLgPA==",
       "dev": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.4.0",
         "@types/json-schema": "^7.0.12",
         "@types/semver": "^7.5.0",
-        "@typescript-eslint/scope-manager": "6.20.0",
-        "@typescript-eslint/types": "6.20.0",
-        "@typescript-eslint/typescript-estree": "6.20.0",
+        "@typescript-eslint/scope-manager": "7.0.1",
+        "@typescript-eslint/types": "7.0.1",
+        "@typescript-eslint/typescript-estree": "7.0.1",
         "semver": "^7.5.4"
       },
       "engines": {
@@ -2060,16 +2060,16 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "eslint": "^7.0.0 || ^8.0.0"
+        "eslint": "^8.56.0"
       }
     },
     "node_modules/@typescript-eslint/visitor-keys": {
-      "version": "6.20.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-6.20.0.tgz",
-      "integrity": "sha512-E8Cp98kRe4gKHjJD4NExXKz/zOJ1A2hhZc+IMVD6i7w4yjIvh6VyuRI0gRtxAsXtoC35uGMaQ9rjI2zJaXDEAw==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-7.0.1.tgz",
+      "integrity": "sha512-hwAgrOyk++RTXrP4KzCg7zB2U0xt7RUU0ZdMSCsqF3eKUwkdXUMyTb0qdCuji7VIbcpG62kKTU9M1J1c9UpFBw==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/types": "6.20.0",
+        "@typescript-eslint/types": "7.0.1",
         "eslint-visitor-keys": "^3.4.1"
       },
       "engines": {
@@ -2910,9 +2910,9 @@
       }
     },
     "node_modules/esbuild": {
-      "version": "0.19.12",
-      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.19.12.tgz",
-      "integrity": "sha512-aARqgq8roFBj054KvQr5f1sFu0D65G+miZRCuJyJ0G13Zwx7vRar5Zhn2tkQNzIXcBrNVsv/8stehpj+GAjgbg==",
+      "version": "0.20.0",
+      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.20.0.tgz",
+      "integrity": "sha512-6iwE3Y2RVYCME1jLpBqq7LQWK3MW6vjV2bZy6gt/WrqkY+WE74Spyc0ThAOYpMtITvnjX09CrC6ym7A/m9mebA==",
       "dev": true,
       "hasInstallScript": true,
       "bin": {
@@ -2922,29 +2922,29 @@
         "node": ">=12"
       },
       "optionalDependencies": {
-        "@esbuild/aix-ppc64": "0.19.12",
-        "@esbuild/android-arm": "0.19.12",
-        "@esbuild/android-arm64": "0.19.12",
-        "@esbuild/android-x64": "0.19.12",
-        "@esbuild/darwin-arm64": "0.19.12",
-        "@esbuild/darwin-x64": "0.19.12",
-        "@esbuild/freebsd-arm64": "0.19.12",
-        "@esbuild/freebsd-x64": "0.19.12",
-        "@esbuild/linux-arm": "0.19.12",
-        "@esbuild/linux-arm64": "0.19.12",
-        "@esbuild/linux-ia32": "0.19.12",
-        "@esbuild/linux-loong64": "0.19.12",
-        "@esbuild/linux-mips64el": "0.19.12",
-        "@esbuild/linux-ppc64": "0.19.12",
-        "@esbuild/linux-riscv64": "0.19.12",
-        "@esbuild/linux-s390x": "0.19.12",
-        "@esbuild/linux-x64": "0.19.12",
-        "@esbuild/netbsd-x64": "0.19.12",
-        "@esbuild/openbsd-x64": "0.19.12",
-        "@esbuild/sunos-x64": "0.19.12",
-        "@esbuild/win32-arm64": "0.19.12",
-        "@esbuild/win32-ia32": "0.19.12",
-        "@esbuild/win32-x64": "0.19.12"
+        "@esbuild/aix-ppc64": "0.20.0",
+        "@esbuild/android-arm": "0.20.0",
+        "@esbuild/android-arm64": "0.20.0",
+        "@esbuild/android-x64": "0.20.0",
+        "@esbuild/darwin-arm64": "0.20.0",
+        "@esbuild/darwin-x64": "0.20.0",
+        "@esbuild/freebsd-arm64": "0.20.0",
+        "@esbuild/freebsd-x64": "0.20.0",
+        "@esbuild/linux-arm": "0.20.0",
+        "@esbuild/linux-arm64": "0.20.0",
+        "@esbuild/linux-ia32": "0.20.0",
+        "@esbuild/linux-loong64": "0.20.0",
+        "@esbuild/linux-mips64el": "0.20.0",
+        "@esbuild/linux-ppc64": "0.20.0",
+        "@esbuild/linux-riscv64": "0.20.0",
+        "@esbuild/linux-s390x": "0.20.0",
+        "@esbuild/linux-x64": "0.20.0",
+        "@esbuild/netbsd-x64": "0.20.0",
+        "@esbuild/openbsd-x64": "0.20.0",
+        "@esbuild/sunos-x64": "0.20.0",
+        "@esbuild/win32-arm64": "0.20.0",
+        "@esbuild/win32-ia32": "0.20.0",
+        "@esbuild/win32-x64": "0.20.0"
       }
     },
     "node_modules/escalade": {
@@ -4715,9 +4715,9 @@
       }
     },
     "node_modules/jose": {
-      "version": "4.15.4",
-      "resolved": "https://registry.npmjs.org/jose/-/jose-4.15.4.tgz",
-      "integrity": "sha512-W+oqK4H+r5sITxfxpSU+MMdr/YSWGvgZMQDIsNoBDGGy4i7GBPTtvFKibQzW06n3U3TqHjhvBJsirShsEJ6eeQ==",
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-5.2.2.tgz",
+      "integrity": "sha512-/WByRr4jDcsKlvMd1dRJnPfS1GVO3WuKyaurJ/vvXcOaUQO8rnNObCQMlv/5uCceVQIq5Q4WLF44ohsdiTohdg==",
       "dev": true,
       "funding": {
         "url": "https://github.com/sponsors/panva"
@@ -5581,9 +5581,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "3.2.4",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.2.4.tgz",
-      "integrity": "sha512-FWu1oLHKCrtpO1ypU6J0SbK2d9Ckwysq6bHj/uaCP26DxrPpppCLQRGVuqAxSTvhF00AcvDRyYrLNW7ocBhFFQ==",
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.2.5.tgz",
+      "integrity": "sha512-3/GWa9aOC0YeD7LUfvOG2NiDyhOWRvt1k+rcKhOuYnMY24iiCphgneUfJDyFXd6rZCAnuLBv6UeAULtrhT/F4A==",
       "dev": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
@@ -6335,12 +6335,12 @@
       }
     },
     "node_modules/ts-api-utils": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-1.0.3.tgz",
-      "integrity": "sha512-wNMeqtMz5NtwpT/UZGY5alT+VoKdSsOOP/kqHFcUW1P/VRhH2wJ48+DN2WwUliNbQ976ETwDL0Ifd2VVvgonvg==",
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-1.2.1.tgz",
+      "integrity": "sha512-RIYA36cJn2WiH9Hy77hdF9r7oEwxAtB/TS9/S4Qd90Ap4z5FSiin5zEiTL44OII1Y3IIlEvxwxFUVgrHSZ/UpA==",
       "dev": true,
       "engines": {
-        "node": ">=16.13.0"
+        "node": ">=16"
       },
       "peerDependencies": {
         "typescript": ">=4.2.0"
diff --git a/package.json b/package.json
index 774c975..5f33c04 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@meeco/sd-jwt-vc",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "SD-JWT VC implementation in typescript",
   "scripts": {
     "build": "tsc",
@@ -47,17 +47,17 @@
   ],
   "author": "Meeco",
   "devDependencies": {
-    "@types/jest": "^29.5.5",
-    "@typescript-eslint/eslint-plugin": "^6.7.3",
-    "@typescript-eslint/parser": "^6.7.3",
-    "esbuild": "^0.19.3",
+    "@types/jest": "^29.5.12",
+    "@typescript-eslint/eslint-plugin": "^7.0.1",
+    "@typescript-eslint/parser": "^7.0.1",
+    "esbuild": "^0.20.0",
     "eslint": "^8.50.0",
     "eslint-config-prettier": "^9.0.0",
     "eslint-plugin-prettier": "^5.0.0",
     "jest": "^29.7.0",
-    "jose": "^4.14.6",
+    "jose": "^5.2.2",
     "npm-run-all": "^4.1.5",
-    "prettier": "^3.0.3",
+    "prettier": "^3.2.5",
     "ts-jest": "^29.1.1",
     "ts-node": "^10.9.1",
     "tsconfig-paths": "^4.2.0",
diff --git a/src/util.spec.ts b/src/util.spec.ts
index 790aaa0..cec874f 100644
--- a/src/util.spec.ts
+++ b/src/util.spec.ts
@@ -12,6 +12,7 @@ describe('getIssuerPublicKeyFromIss', () => {
 
   const baseUrl = `${url.protocol}//${url.host}`;
   const jwtIssuerWellKnownUrl = `${baseUrl}/.well-known/jwt-vc-issuer/${issuerPath}`;
+  const jwtIssuerWellKnownFallbackUrl = `${baseUrl}/.well-known/jwt-issuer/${issuerPath}`;
   const issuerUrl = `${baseUrl}/${issuerPath}`;
   const jwksUri = `${issuerUrl}/my_public_keys.jwks`;
 
@@ -97,6 +98,55 @@ describe('getIssuerPublicKeyFromIss', () => {
     expect(result).toEqual(expectedJWK);
   });
 
+  it('should get issuer public keys from a fallback endpoint', async () => {
+    const expectedJWK: JWK = {
+      kty: 'RSA',
+      kid: 'test-key',
+      n: 'test-n',
+      e: 'AQAB',
+    };
+
+    (global as any).fetch = jest.fn().mockImplementation((url: string) => {
+      if (url === jwtIssuerWellKnownUrl) {
+        return Promise.reject({
+          json: () =>
+            Promise.resolve({
+              status: 404,
+              json: () => Promise.reject(new SDJWTVCError('Issuer response not found')),
+            }),
+        });
+      }
+
+      if (url === jwtIssuerWellKnownFallbackUrl) {
+        return Promise.resolve({
+          json: () =>
+            Promise.resolve({
+              issuer: jwt.payload.iss,
+              jwks: {
+                keys: [
+                  {
+                    kty: 'RSA',
+                    kid: 'test-key',
+                    n: 'test-n',
+                    e: 'AQAB',
+                  },
+                ],
+              },
+            }),
+        });
+      }
+
+      throw new SDJWTVCError(`Unexpected URL: ${url}`);
+    });
+
+    const result = await getIssuerPublicKeyFromWellKnownURI(sdJwtVC, issuerPath);
+
+    expect(fetch).toHaveBeenCalledTimes(2);
+    expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownUrl);
+    expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownFallbackUrl);
+    expect(result).toEqual(expectedJWK);
+  });
+
   it('should throw an error if issuer response is not found', async () => {
     (global as any).fetch = jest.fn().mockResolvedValueOnce({
       json: () => Promise.resolve(null),
@@ -176,7 +226,7 @@ describe('getIssuerPublicKeyFromIss', () => {
     expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownUrl);
   });
 
-  it('should throw an error if well-known retrun empty response', async () => {
+  it('should throw an error if well-known returns empty response', async () => {
     (global as any).fetch = jest.fn().mockResolvedValueOnce({
       json: () => Promise.resolve({}),
     });
@@ -189,12 +239,21 @@ describe('getIssuerPublicKeyFromIss', () => {
     expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownUrl);
   });
 
-  it('should throw an error if well-known retrun 404', async () => {
-    (global as any).fetch = jest.fn().mockResolvedValueOnce({
+  it('throws error if issuer from well-known file does not match one inside the sd-jwt', async () => {
+    (global as any).fetch = jest.fn().mockResolvedValue({
       json: () =>
         Promise.resolve({
-          status: 404,
-          json: () => Promise.reject(new SDJWTVCError('Issuer response not found')),
+          issuer: 'http://some.other/issuer',
+          jwks: {
+            keys: [
+              {
+                kty: 'RSA',
+                kid: 'test-key',
+                n: 'test-n',
+                e: 'AQAB',
+              },
+            ],
+          },
         }),
     });
 
@@ -206,19 +265,18 @@ describe('getIssuerPublicKeyFromIss', () => {
     expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownUrl);
   });
 
-  it('should throw an error if well-known retrun invalid response', async () => {
-    (global as any).fetch = jest.fn().mockResolvedValueOnce({
-      invalid: () =>
-        Promise.resolve(
-          'Failed to fetch or parse the response from https://valid.issuer.url/.well-known/jwt-vc-issuer/user/1234 as JSON. Error: response.json is not a function',
-        ),
-    });
+  it('should throw an error if well-known calls return errors', async () => {
+    (global as any).fetch = jest
+      .fn()
+      .mockRejectedValueOnce(new Error('internal server error 1'))
+      .mockRejectedValueOnce(new Error('internal server error 2'));
 
     await expect(getIssuerPublicKeyFromWellKnownURI(sdJwtVC, issuerPath)).rejects.toThrow(
-      'Failed to fetch or parse the response from https://valid.issuer.url/.well-known/jwt-vc-issuer/user/1234 as JSON. Error: response.json is not a function',
+      'Failed to fetch and parse the response from https://valid.issuer.url/.well-known/jwt-vc-issuer/user/1234 as JSON. Error: internal server error 1. Fallback fetch and parse the response from https://valid.issuer.url/.well-known/jwt-issuer/user/1234 failed as well. Error: internal server error 2.',
     );
 
-    expect(fetch).toHaveBeenCalledTimes(1);
+    expect(fetch).toHaveBeenCalledTimes(2);
     expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownUrl);
+    expect(fetch).toHaveBeenCalledWith(jwtIssuerWellKnownFallbackUrl);
   });
 });
diff --git a/src/util.ts b/src/util.ts
index e09e116..c72adba 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -38,24 +38,44 @@ export async function getIssuerPublicKeyFromWellKnownURI(sdJwtVC: JWT, issuerPat
   const s = sdJwtVC.split(SD_JWT_FORMAT_SEPARATOR);
   const jwt = decodeJWT(s.shift() || '');
 
-  const wellKnownPath = `.well-known/jwt-vc-issuer/${issuerPath}`;
-
   if (!jwt.payload.iss || !isValidUrl(jwt.payload.iss)) {
     throw new SDJWTVCError('Invalid issuer well-known URL');
   }
 
   const url = new URL(jwt.payload.iss);
   const baseUrl = `${url.protocol}//${url.host}`;
-  const issuerUrl = `${baseUrl}/${wellKnownPath}`;
+  const issuerUrl = `${baseUrl}/.well-known/jwt-vc-issuer/${issuerPath}`;
 
-  let responseJson: any;
-  try {
-    const response = await fetch(issuerUrl);
-    responseJson = await response.json();
-  } catch (error) {
-    throw new SDJWTVCError(`Failed to fetch or parse the response from ${issuerUrl} as JSON. Error: ${error.message}`);
-  }
+  const [responseJson, error] = await fetch(issuerUrl)
+    .then(async (response) => [await response.json(), null])
+    .catch(async (err) => {
+      /**
+       * @deprecated
+       * In favor of: https://drafts.oauth.net/oauth-sd-jwt-vc/draft-ietf-oauth-sd-jwt-vc.html#name-jwt-vc-issuer-metadata
+       * To stay compatible with the old spec, check on the /.well-known/jwt-issuer/ endpoint is still being done if /.well-known/jwt-vc-issuer/ returned an error.
+       * No one should rely on this functionality, it will be removed at some point later.
+       */
+      const issuerFallbackUrl = `${baseUrl}/.well-known/jwt-issuer/${issuerPath}`;
 
+      console.warn(
+        `GET request to ${issuerUrl} has failed. Falling back to ${issuerFallbackUrl}. Fallback URL is here to support older version of the specification. You should not rely on this functionality being here. It will be removed at some point in the future.`,
+      );
+
+      return fetch(issuerFallbackUrl)
+        .then(async (response) => [await response.json(), null])
+        .catch((fallbackErr) => {
+          return [
+            null,
+            new SDJWTVCError(
+              `Failed to fetch and parse the response from ${issuerUrl} as JSON. Error: ${err.message}. Fallback fetch and parse the response from ${issuerFallbackUrl} failed as well. Error: ${fallbackErr.message}.`,
+            ),
+          ];
+        });
+    });
+
+  if (error) {
+    throw error;
+  }
   if (!responseJson) {
     throw new SDJWTVCError('Issuer response not found');
   }