diff --git a/test-requirements.txt b/test-requirements.txt
index 461bf89..6e94c16 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +1,3 @@
-Cython>=3.3.0
+Cython>=3.3.1
 pytest>=9.1.1
 pytest-cov>=7.1.0