diff --git a/requirements/tools.txt b/requirements/tools.txt
index 0a646dc12..dd09cd46f 100644
--- a/requirements/tools.txt
+++ b/requirements/tools.txt
@@ -1,4 +1,6 @@
-mypy<=1.18.2
+# We only need to install mypy with CPython runtimes
+# Typechecking using the PyPy runtime is not planned
+mypy<=1.19.0; platform_python_implementation == "CPython"
 # while flake8 5.x have issues with Python 3.12, flake8 6.x requires Python >= 3.8.1,
 # so 5.x should be kept in order to stay compatible with Python 3.7/3.8
 flake8>=5.0.4,<8