diff --git a/requirements.txt b/requirements.txt
index 9c4c15ff7..4f2dfc656 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ pika
 psycopg2-binary
 pygpgme
 pyOpenSSL
-pytest
+pytest==3.5.0
 python-ldap
 pytz
 PyYAML
diff --git a/testsuite/ansible_docker/test-requirements.txt b/testsuite/ansible_docker/test-requirements.txt
index d0eb1d3db..29ddb6b61 100644
--- a/testsuite/ansible_docker/test-requirements.txt
+++ b/testsuite/ansible_docker/test-requirements.txt
@@ -2,7 +2,7 @@ nose
 coverage
 pep8
 pylint
-pytest
+pytest==3.5.0
 pytest-cov
 pytest-flask
 pytest-watch
diff --git a/testsuite/docker/test-config/test-requirements.txt b/testsuite/docker/test-config/test-requirements.txt
index d0eb1d3db..29ddb6b61 100644
--- a/testsuite/docker/test-config/test-requirements.txt
+++ b/testsuite/docker/test-config/test-requirements.txt
@@ -2,7 +2,7 @@ nose
 coverage
 pep8
 pylint
-pytest
+pytest==3.5.0
 pytest-cov
 pytest-flask
 pytest-watch