diff --git a/package-lists/build/main.pkgs b/package-lists/build/main.pkgs
index 4b7cce61..c311c3c8 100644
--- a/package-lists/build/main.pkgs
+++ b/package-lists/build/main.pkgs
@@ -23,6 +23,7 @@ libkdumpfile
 make-jpkg
 makedumpfile
 masking
+mount-s3
 nfs-utils
 performance-diagnostics
 ptools
diff --git a/packages/mount-s3/config.sh b/packages/mount-s3/config.sh
new file mode 100644
index 00000000..4a1611c9
--- /dev/null
+++ b/packages/mount-s3/config.sh
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+#
+# Copyright 2026 Delphix
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# shellcheck disable=SC2034
+
+#
+# mount-s3 (Mountpoint for Amazon S3) — FUSE driver for mounting S3 buckets.
+#
+# mount-s3 has no apt repository; Amazon only distributes it as a direct .deb
+# download from S3. The .deb has been uploaded to Artifactory for reproducible
+# builds. Required by HM-5952 for the Hyperscale Snowflake connector to mount
+# S3 staging areas at /mnt/hyperscale.
+#
+# Source: https://s3.amazonaws.com/mountpoint-s3-release/latest/x86_64/mount-s3.deb
+# OSRB tracking: DLPXECO-13872
+#
+
+DEFAULT_PACKAGE_GIT_URL=none
+SKIP_COPYRIGHTS_CHECK=true
+
+_DEB="mount-s3_1.22.3_amd64.deb"
+_DEB_SHA256="259a793b1233258b35ce5ce902df177393542fd76dd2a606f07e800e28591df6"
+
+function fetch() {
+	logmust cd "$WORKDIR/artifacts"
+
+	local url="http://artifactory.delphix.com/artifactory/linux-pkg/mount-s3/$_DEB"
+	logmust fetch_file_from_artifactory "$url" "$_DEB_SHA256"
+
+	echo "Fetched: $_DEB ($_DEB_SHA256)" >BUILD_INFO
+}
+
+function build() {
+	# Nothing to do — the deb is fetched directly in fetch().
+	return
+}