diff --git a/test_requirements.txt b/test_requirements.txt
index 0a59f9e4..677f5964 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -6,7 +6,7 @@ hypothesis
 # qcodes' data_set_protocol.py (verified up to 2.3.1, the latest release as
 # of writing). Pinned to 2.1.0, the newest version that doesn't crash; bump
 # once upstream fixes this (see https://github.com/python/mypy/issues/21741).
-mypy==2.1.0
+mypy==2.3.1
 PySide6-stubs
 pandas-stubs
 watchdog
\ No newline at end of file