diff --git a/requirements/test.txt b/requirements/test.txt
index 8387490175..d4a554df35 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -10,7 +10,7 @@ attrs==19.1.0
 execnet==1.6.0            # via pytest-xdist
 importlib-metadata==0.18  # via pluggy, pytest
 mock==3.0.5
-more-itertools==7.0.0
+more-itertools==5.0.0
 packaging==19.0           # via pytest
 pluggy==0.12.0            # via pytest
 py==1.8.0                 # via pytest
diff --git a/requirements/tools.txt b/requirements/tools.txt
index dd536d1500..a98202ca23 100644
--- a/requirements/tools.txt
+++ b/requirements/tools.txt
@@ -46,7 +46,7 @@ lazy-object-proxy==1.4.1  # via astroid
 markupsafe==1.1.1         # via jinja2
 mccabe==0.6.1             # via flake8, pylint
 mock==3.0.5
-more-itertools==7.0.0
+more-itertools==5.0.0
 mypy-extensions==0.4.1    # via mypy
 mypy==0.710
 numpy==1.16.4