diff --git a/misc/tools.func b/misc/tools.func
index c066685a..0e3fd0c2 100644
--- a/misc/tools.func
+++ b/misc/tools.func
@@ -6059,8 +6059,11 @@ function setup_mongodb() {
   }
 
   # Setup repository
+  # MongoDB 8.x versions beyond 8.0 reuse the server-8.0.asc PGP key
+  local MONGO_KEY_VERSION="${MONGO_VERSION}"
+  [[ "${MONGO_VERSION}" == 8.[1-9]* ]] && MONGO_KEY_VERSION="8.0"
   manage_tool_repository "mongodb" "$MONGO_VERSION" "$MONGO_BASE_URL" \
-    "https://www.mongodb.org/static/pgp/server-${MONGO_VERSION}.asc" || {
+    "https://www.mongodb.org/static/pgp/server-${MONGO_KEY_VERSION}.asc" || {
     msg_error "Failed to setup MongoDB repository"
     return 100
   }