diff --git a/package-lock.json b/package-lock.json
index 3173695..757dee6 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",
@@ -12660,9 +12675,9 @@
       }
     },
     "ws": {
-      "version": "7.3.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.3.0.tgz",
-      "integrity": "sha512-iFtXzngZVXPGgpTlP1rBqsUK82p9tKqsWRPg5L56egiljujJT3vGAYnHANvFxBieXrTFavhzhxW52jnaWV+w2w==",
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==",
       "dev": true
     },
     "xml-name-validator": {
diff --git a/yarn.lock b/yarn.lock
index 40dca6a..16a53ff 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7981,9 +7981,9 @@ write@1.0.3:
     mkdirp "^0.5.1"
 
 ws@^7.0.0:
-  version "7.3.0"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-7.3.0.tgz#4b2f7f219b3d3737bc1a2fbf145d825b94d38ffd"
-  integrity sha512-iFtXzngZVXPGgpTlP1rBqsUK82p9tKqsWRPg5L56egiljujJT3vGAYnHANvFxBieXrTFavhzhxW52jnaWV+w2w==
+  version "7.4.6"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.6.tgz#5654ca8ecdeee47c33a9a4bf6d28e2be2980377c"
+  integrity sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==
 
 xml-name-validator@^3.0.0:
   version "3.0.0"