diff --git a/test_requirements.txt b/test_requirements.txt
index 961e985809d9..a9ef15951dc6 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -10,4 +10,4 @@ pickle5; python_version == '3.7' and platform_python_implementation != 'PyPy'
 cffi
 # For testing types. Notes on the restrictions:
 # - Mypy relies on C API features not present in PyPy
-mypy==0.910; platform_python_implementation != "PyPy"
+mypy==0.931; platform_python_implementation != "PyPy"