diff --git a/degrees.json b/degrees.json
index 8cd17eb..9e99aa1 100644
--- a/degrees.json
+++ b/degrees.json
@@ -435,11 +435,11 @@
       },
       {
         "name": "complementi-di-basi-di-dati",
-        "mandatory": false
+        "mandatory": true
       },
       {
         "name": "intelligenza-artificiale",
-        "mandatory": false
+        "mandatory": true
       },
       {
         "name": "digital-forensics",
@@ -491,11 +491,27 @@
       },
       {
         "name": "emerging-programming-paradigms",
-        "mandatory": false
+        "mandatory": true
       },
       {
         "name": "computer-vision",
         "mandatory": false
+      },
+      {
+        "name": "artificial-intelligence-blockchain-e-criptovalute-nello-sviluppo-software",
+        "mandatory": false
+      },
+      {
+        "name": "deep-learning",
+        "mandatory": true
+      },
+      {
+        "name": "cryptography",
+        "mandatory": true
+      },
+      {
+        "name": "scalable-and-cloud-programming",
+        "mandatory": true
       }
     ]
   },
diff --git a/teachings.json b/teachings.json
index 73ca48d..f1524b4 100644
--- a/teachings.json
+++ b/teachings.json
@@ -273,7 +273,7 @@
     "name": "Deep Learning",
     "url": "deep-learning",
     "chat": "t.me/+3XKIOM3Lnh1kNTM0",
-    "website": "491909",
+    "website": "493201",
     "professors": [
       "andrea.asperti"
     ]
@@ -900,10 +900,37 @@
   {
     "name": "Computer Vision",
     "url": "computer-vision",
-    "chat": "",
+    "chat": "https://t.me/+9wTytT_D4Lg1MjFk",
     "website": "479049",
     "professors": [
       "giuseppe.lisanti"
     ]
+  },
+  {
+    "name": "Artificial Intelligence, Blockchain e criptovalute nello sviluppo software",
+    "url": "artificial-intelligence-blockchain-e-criptovalute-nello-sviluppo-software",
+    "chat": "https://t.me/+FrU7IhMlaZoyZDZk",
+    "website": "495981",
+    "professors": [
+      "giancarlo.succi"
+    ]
+  },
+  {
+    "name": "Cryptography",
+    "url": "cryptography",
+    "chat": "https://t.me/+h0CF62a0rNRiNDQ0",
+    "website": "479060",
+    "professors": [
+      "ugo.dallago"
+    ]
+  },
+  {
+    "name": "Scalable and Cloud Programming",
+    "url": "scalable-and-cloud-programming",
+    "chat": "https://t.me/+-7R_uvQAWGhiODZk",
+    "website": "479058",
+    "professors": [
+      "gianluigi.zavattaro"
+    ]
   }
 ]