diff --git a/examples/pdf-server/package.json b/examples/pdf-server/package.json
index 15472f9fc..57d4debab 100644
--- a/examples/pdf-server/package.json
+++ b/examples/pdf-server/package.json
@@ -36,7 +36,7 @@
     "@modelcontextprotocol/server": "2.0.0",
     "cors": "^2.8.5",
     "express": "^5.1.0",
-    "pdfjs-dist": "^5.0.0",
+    "pdfjs-dist": "5.4.530",
     "zod": "^4.2.0"
   },
   "devDependencies": {
diff --git a/package-lock.json b/package-lock.json
index d56d11e00..2fee93003 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -766,7 +766,7 @@
         "@modelcontextprotocol/server": "2.0.0",
         "cors": "^2.8.5",
         "express": "^5.1.0",
-        "pdfjs-dist": "^5.0.0",
+        "pdfjs-dist": "5.4.530",
         "zod": "^4.2.0"
       },
       "bin": {