diff --git a/src/apispec.ts b/src/apispec.ts
index 4a1f496..9aa3018 100644
--- a/src/apispec.ts
+++ b/src/apispec.ts
@@ -14,6 +14,14 @@ export function generateSpec(storage: MetadataArgsStorage, schemas) {
         {
             components: {
                 schemas,
+                "securitySchemes": {
+                    "AuthToken": {
+                        "type": "apiKey",
+                        "in": "query",
+                        "name": "key",
+                        description: "A simple api key. See the README's env section for more details."
+                    }
+                }
             },
             info: {
                 description: "The the API for the LfK! document server.",
diff --git a/src/controllers/PdfController.ts b/src/controllers/PdfController.ts
index 15f0db4..3e82693 100644
--- a/src/controllers/PdfController.ts
+++ b/src/controllers/PdfController.ts
@@ -11,6 +11,7 @@ import { PdfCreator } from '../PdfCreator';
  */
 @JsonController()
 @Authorized()
+@OpenAPI({ security: [{ "AuthToken": [] }] })
 export class PdfController {
     private pdf: PdfCreator = new PdfCreator();
     private initialized: boolean = false;