diff --git a/setup.py b/setup.py
index acb886dde0..993b498bf1 100644
--- a/setup.py
+++ b/setup.py
@@ -7,6 +7,7 @@
 
 general_requirements = [
     'dpath >= 1.5.0, < 2.0.0',
+    'nptyping == 1.4.4',
     'numexpr >= 2.7.0, <= 3.0',
     'numpy >= 1.11, < 1.21',
     'psutil >= 5.4.7, < 6.0.0',
@@ -29,7 +30,7 @@
     'flake8-bugbear >= 19.3.0, < 20.0.0',
     'flake8-docstrings == 1.6.0',
     'flake8-print >= 3.1.0, < 4.0.0',
-    'flake8-rst-docstrings < 1.0.0',
+    'flake8-rst-docstrings == 0.2.3',
     'mypy >= 0.701, < 0.800',
     'openfisca-country-template >= 3.10.0, < 4.0.0',
     'openfisca-extension-template >= 1.2.0rc0, < 2.0.0',