diff --git a/package-lock.json b/package-lock.json
index 6655f6142..d1af61cbd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,7 +39,7 @@
         "mermaid": "^11.5.0",
         "minimatch-browser": "^1.0.0",
         "ngx-markdown": "18.1.0",
-        "pdfjs-dist": "^5.1.91",
+        "pdfjs-dist": "5.1.91",
         "prismjs": "^1.30.0",
         "rxjs": "7.8.2",
         "tslib": "2.8.1",
@@ -24659,12 +24659,12 @@
       "license": "MIT"
     },
     "node_modules/pdfjs-dist": {
-      "version": "5.3.31",
-      "resolved": "https://registry.npmjs.org/pdfjs-dist/-/pdfjs-dist-5.3.31.tgz",
-      "integrity": "sha512-EhPdIjNX0fcdwYQO+e3BAAJPXt+XI29TZWC7COhIXs/K0JHcUt1Gdz1ITpebTwVMFiLsukdUZ3u0oTO7jij+VA==",
+      "version": "5.1.91",
+      "resolved": "https://registry.npmjs.org/pdfjs-dist/-/pdfjs-dist-5.1.91.tgz",
+      "integrity": "sha512-qSIADdagooJB4wWCBnrBJjRvASevmxL0BwafvOuKJG5uTQdYoFBrhrRYnucKNiSc9qS6JIk0hC5y1yktFljXkA==",
       "license": "Apache-2.0",
       "engines": {
-        "node": ">=20.16.0 || >=22.3.0"
+        "node": ">=20"
       },
       "optionalDependencies": {
         "@napi-rs/canvas": "^0.1.67"
diff --git a/package.json b/package.json
index aed168d5b..a3ca30ad9 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "mermaid": "^11.5.0",
     "minimatch-browser": "^1.0.0",
     "ngx-markdown": "18.1.0",
-    "pdfjs-dist": "^5.1.91",
+    "pdfjs-dist": "5.1.91",
     "prismjs": "^1.30.0",
     "rxjs": "7.8.2",
     "tslib": "2.8.1",