diff --git a/requirements.txt b/requirements.txt
index 98552adde4..00cbfc75e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ retrying!=1.3.0,>=1.2.3 # Apache-2.0
 osprofiler>=1.4.0 # Apache-2.0
 
 # Glance Store
-glance-store>=2.3.0 # Apache-2.0
+glance-store @ git+https://github.com/stackhpc/glance_store@stackhpc/4.7.0.3 # Apache-2.0
 
 
 debtcollector>=1.19.0 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index bfa45059af..bf9248dc93 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,6 +17,7 @@ setenv =
   OS_TEST_DBAPI_ADMIN_CONNECTION=sqlite:////tmp/placeholder-never-created-nor-used.db
 # TODO(stephenfin): Remove once we bump our upper-constraint to SQLAlchemy 2.0
   SQLALCHEMY_WARN_20=1
+  TOX_CONSTRAINTS_FILE=https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/caracal-downstream-glance-store/upper-constraints.txt
 usedevelop = True
 install_command = python -m pip install -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2024.1} {opts} {packages}
 deps = -r{toxinidir}/test-requirements.txt