diff --git a/requirements_dev.txt b/requirements_dev.txt
index b35f5d03c18118e586702b8aa494b999178ce5b1..5fad00e401dc657dd2e60f886e8e6ebac022d2bd 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,6 +1,6 @@
 # contains all requirements to run the tests by running ```tox -e py36,py37```
 tox>=3.5.2
-pytest>=3.8.2
+pytest>=3.8.2,<5
 pytest-runner>=4.2
 Click>=7.0
 crowdai-api>=0.1.21