diff --git a/test-requirements.txt b/test-requirements.txt
index 94fd0b6332..c11b4b2af7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -17,3 +17,4 @@ oslosphinx>=4.7.0 # Apache-2.0
 openstackdocstheme>=1.5.0 # Apache-2.0
 doc8 # Apache-2.0
 reno>=1.8.0 # Apache2
+sphinxmark>=0.1.14  # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 59d4e2e45e..0aa390f1e8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,6 @@ install_command =
     pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 deps =
     -r{toxinidir}/test-requirements.txt
-    sphinxmark>=0.1.14
 passenv =
     HOME
     http_proxy