diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index cc9ef0e45..cb77e86b4 100755
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -165,7 +165,7 @@ function configure_mongodb {
             curl -fsSL https://pgp.mongodb.com/server-8.0.asc | \
                 sudo gpg -o /usr/share/keyrings/mongodb-server-8.0.gpg \
                 --dearmor
-            echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu noble/mongodb-org/8.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list
+            echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-8.0.gpg ] https://repo.mongodb.org/apt/ubuntu noble/mongodb-org/8.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list
             sudo apt update
             install_package mongodb-org
             restart_service mongod
diff --git a/tools/test-setup.sh b/tools/test-setup.sh
index be6704dba..1aa79c715 100755
--- a/tools/test-setup.sh
+++ b/tools/test-setup.sh
@@ -41,7 +41,7 @@ if [[ $ubuntu_version == '24.04' ]]; then
     curl -fsSL https://pgp.mongodb.com/server-8.0.asc | \
         sudo gpg -o /usr/share/keyrings/mongodb-server-8.0.gpg \
         --dearmor
-    echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu noble/mongodb-org/8.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list
+    echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-8.0.gpg ] https://repo.mongodb.org/apt/ubuntu noble/mongodb-org/8.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list
     sudo apt update
     sudo apt install -y mongodb-org
     sudo systemctl restart mongod