diff --git a/distributedcloud/test-requirements.txt b/distributedcloud/test-requirements.txt
index 216f21e41..5d0cebed6 100644
--- a/distributedcloud/test-requirements.txt
+++ b/distributedcloud/test-requirements.txt
@@ -21,4 +21,4 @@ tempest-lib>=0.14.0 # Apache-2.0
 pylint==1.9.2;python_version<"3.0" # GPLv2
 pylint==2.3.1;python_version>="3.0" # GPLv2
 PyYAML>=3.1.0
-yamllint>=0.5.2
+yamllint<1.26.1;python_version>="3.0" # GPLv2
diff --git a/distributedcloud/tox.ini b/distributedcloud/tox.ini
index 1ea5aab3d..ba9d982be 100644
--- a/distributedcloud/tox.ini
+++ b/distributedcloud/tox.ini
@@ -18,6 +18,7 @@ cgtsclient_src_dir = ../../config/sysinv/cgts-client/cgts-client
 cgcs_patch_src_dir = ../../update/cgcs-patch/cgcs-patch
 
 [testenv]
+sitepackages = False
 install_command = pip install -v -v -v \
     -c https://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt \
     {opts} {packages}
@@ -184,7 +185,6 @@ import_exceptions = dcmanager.common.i18n,dcorch.common.i18n
 
 [testenv:pylint]
 basepython = python3
-sitepackages = False
 deps = {[testenv:py27]deps}
        -e{[dc]cgcs_patch_src_dir}
 
diff --git a/test-requirements.txt b/test-requirements.txt
index 184eec960..736d058e1 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +1,3 @@
 PyYAML>=3.1.0
-yamllint>=0.5.2
+yamllint<1.26.1;python_version>="3.0" # GPLv2
 mock>=2.0 # BSD