diff --git a/.github/workflows/check_repos.yaml b/.github/workflows/check_repos.yaml
new file mode 100644
index 0000000..617092e
--- /dev/null
+++ b/.github/workflows/check_repos.yaml
@@ -0,0 +1,31 @@
+name: Check repo existance
+
+on:
+  schedule:
+    - cron: '0 0 * * 1'
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Check all teachings
+        run: |
+          bash -c '
+            OK=true
+
+            echo "Checking repos..."
+
+            for r in $(jq -r '.[].url' < ./teachings.json); do
+              if [ $(curl -s -o /dev/null -w "%{http_code}" https://github.com/$GITHUB_REPOSITORY_OWNER/$r) -eq 404 ]; then
+                echo "::error::$r NOT FOUND";
+                OK=false
+              fi
+            done
+
+            if ! $OK; then
+              echo "::error::Some repos do not exist on github but are present on teachings.json"
+              exit 1
+            fi
+          '
diff --git a/degrees.json b/degrees.json
index dd99eb3..7179d68 100644
--- a/degrees.json
+++ b/degrees.json
@@ -308,7 +308,7 @@
         "mandatory": true
       },
       {
-        "name": "ing-algebra-e-geometria-t",
+        "name": "ing-geometria-e-algebra-t",
         "year": 1,
         "mandatory": true
       },
@@ -392,6 +392,11 @@
         "year": 3,
         "mandatory": true
       },
+      {
+        "name": "ing-affidabilita-e-controllo-della-qualita-t",
+        "year": 3,
+        "mandatory": false
+      },
       {
         "name": "ing-laboratorio-sicurezza-informatica-t",
         "year": 3,
@@ -403,7 +408,12 @@
         "mandatory": false
       },
       {
-        "name": "ing-diritto-t",
+        "name": "ing-diritto-dell-informatica-t",
+        "year": 3,
+        "mandatory": false
+      },
+      {
+        "name": "ing-progettazione-di-applicazioni-web-t",
         "year": 3,
         "mandatory": false
       }
@@ -469,10 +479,6 @@
         "name": "decision-making-with-constraint-programming",
         "mandatory": false
       },
-      {
-        "name": "ingegneria-del-software-orientata-ai-servizi",
-        "mandatory": false
-      },
       {
         "name": "simulazione-di-sistemi",
         "mandatory": false
diff --git a/teachings.json b/teachings.json
index d8f6a79..0d6875d 100644
--- a/teachings.json
+++ b/teachings.json
@@ -77,7 +77,7 @@
   },
   {
     "name": "Geometria e algebra T",
-    "url": "ing-algebra-e-geometria-t",
+    "url": "ing-geometria-e-algebra-t",
     "chat": "chat.whatsapp.com/HB1Gp5ZlMzR9xIhgUwEkrA",
     "website": "434697",
     "professors": [
@@ -167,16 +167,6 @@
       "zeynep.kiziltan"
     ]
   },
-  {
-    "name": "Ingegneria del software orientata ai servizi",
-    "url": "ingegneria-del-software-orientata-ai-servizi",
-    "chat": "t.me/ISOS_unibo",
-    "website": "479037",
-    "professors": [
-      "davide.rossi",
-      "ivan.lanese"
-    ]
-  },
   {
     "name": "Simulazione di sistemi",
     "url": "simulazione-di-sistemi",
@@ -575,6 +565,26 @@
       "massimo.lanzoni"
     ]
   },
+  {
+    "degree": "ingegneria",
+    "name": "Affidabilità e controllo della qualità T",
+    "url": "ing-affidabilita-e-controllo-della-qualita-t",
+    "chat": "chat.whatsapp.com/HB1Gp5ZlMzR9xIhgUwEkrA",
+    "website": "434717",
+    "professors": [
+      "roberto.tinarelli3"
+    ]
+  },
+  {
+    "degree": "ingegneria",
+    "name": "Progettazione di applicazioni web T",
+    "url": "ing-progettazione-di-applicazioni-web-t",
+    "chat": "chat.whatsapp.com/HB1Gp5ZlMzR9xIhgUwEkrA",
+    "website": "461145",
+    "professors": [
+      "ilaria.bartolini"
+    ]
+  },
   {
     "degree": "ingegneria",
     "name": "Amministazione di sistemi",
@@ -897,7 +907,7 @@
   },
   {
     "name": "Diritto dell'Informatica T",
-    "url": "ing-diritto-t",
+    "url": "ing-diritto-dell-informatica-t",
     "chat": "t.me/joinchat/BMT7WBYtBSdduMJdhjs3Ew",
     "website": "434715",
     "professors": [