diff --git a/tests/requirements-tools.txt b/tests/requirements-tools.txt
index b34dbc8096..b74707f909 100644
--- a/tests/requirements-tools.txt
+++ b/tests/requirements-tools.txt
@@ -8,4 +8,4 @@ pytest-timeout   # Plugin to abort hanging tests.
 pytest-catchlog  # Capture log output separately from stdout/stderr
 pytest-drop-dup-tests # allows specifying order without duplicates
 
-psutil  # Better subprocess alternative with implemented timeout.
+psutil==5.2.2  # Better subprocess alternative with implemented timeout.