diff --git a/pyproject.toml b/pyproject.toml
index bd93a2fb7..c6bde1f2d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -381,6 +381,6 @@ skip = [
     "*-manylinux_s390x", # Skip slow Linux
 ]
 
-before-test = "pip install pytest"
+before-test = "pip install pytest urllib3<2"
 test-extras = "ml"
 test-command = "pytest {project}/tests/pipelines/test_pipelines.py"