diff --git a/lectures/17/info.json b/lectures/17/info.json
index f7f2a49..4491900 100644
--- a/lectures/17/info.json
+++ b/lectures/17/info.json
@@ -9,19 +9,19 @@
   "lectures": [
     {
       "title": "جلسه اول: توابعی از دو متغیر تصادفی",
-      "streamLink": "https://www.aparat.com/video/video/embed/videohash/XP5Lr/vt/frame",
+      "streamLink": "https://www.youtube.com/watch?v=uJgQ8MsMkAk&list=PLdSslhDhrVc47zM1fgy1WEPs7-sC6JVUG&index=49",
       "file": "https://openbookshelf.github.io/ProbStat/lectures/17/Lecture1.html",
       "description": "جلسه اول "
     },
     {
       "title": "جلسه دوم: دو تابع از دو متغیر تصادفی",
-      "streamLink": "https://www.aparat.com/video/video/embed/videohash/xQ1aC/vt/frame",
+      "streamLink": "https://www.youtube.com/watch?v=gJyrUuR9XW8&list=PLdSslhDhrVc47zM1fgy1WEPs7-sC6JVUG&index=50",
       "file": "https://openbookshelf.github.io/ProbStat/lectures/17/Lecture2.html",
       "description": "جلسه دوم "
     },
     {
       "title": "جلسه سوم: متغیرهای تصادفی مشترکا نرمال",
-      "streamLink": "https://www.aparat.com/video/video/embed/videohash/cSTMN/vt/frame",
+      "streamLink": "https://www.youtube.com/watch?v=IWZPaAvRuc8&list=PLdSslhDhrVc47zM1fgy1WEPs7-sC6JVUG&index=51",
       "file": "https://openbookshelf.github.io/ProbStat/lectures/17/Lecture3.html",
       "description": "جلسه سوم "
     }