diff --git a/bbb-install.sh b/bbb-install.sh
index 463e53e..81759e0 100644
--- a/bbb-install.sh
+++ b/bbb-install.sh
@@ -312,8 +312,9 @@ main() {
    echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-6.0.gpg ] https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/6.0 multiverse" | \
    sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list
 
-
-
+    # postgres for BigBlueButton core
+    sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
+    curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/postgresql.gpg
 
     touch /root/.rnd
     MONGODB=mongodb-org