diff --git a/package-lock.json b/package-lock.json
index 3173695..4665c2c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "course-vue-backend",
-  "version": "1.3.3",
+  "version": "1.3.9",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1328,6 +1328,21 @@
         }
       }
     },
+    "@nestjs/serve-static": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@nestjs/serve-static/-/serve-static-2.1.4.tgz",
+      "integrity": "sha512-w2PpLKzQOB8rJ+vMOy28xm8jwE8VjJfA9U+KOm0H0OY62g2oOWJ+OQPSDogP7XxAzZwq+Bt8wNU2oS8+z6v6Zg==",
+      "requires": {
+        "path-to-regexp": "0.1.7"
+      },
+      "dependencies": {
+        "path-to-regexp": {
+          "version": "0.1.7",
+          "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
+          "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
+        }
+      }
+    },
     "@nestjs/swagger": {
       "version": "4.5.7",
       "resolved": "https://registry.npmjs.org/@nestjs/swagger/-/swagger-4.5.7.tgz",
@@ -12683,9 +12698,9 @@
       "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
     },
     "y18n": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w=="
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.1.tgz",
+      "integrity": "sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ=="
     },
     "yallist": {
       "version": "3.1.1",
diff --git a/yarn.lock b/yarn.lock
index 40dca6a..56231a9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8001,9 +8001,9 @@ xtend@^4.0.0, xtend@~4.0.1:
   integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
 
 y18n@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
-  integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.1.tgz#8db2b83c31c5d75099bb890b23f3094891e247d4"
+  integrity sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==
 
 yallist@^3.0.0, yallist@^3.0.2, yallist@^3.0.3:
   version "3.1.1"