diff --git a/requirements.txt b/requirements.txt
index 7460f4f..eaa3710 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ contourpy==1.3.0
     # via matplotlib
 cycler==0.12.1
     # via matplotlib
-cython==3.1.1
+cython==3.2.4
     # via
     #   pyprophet
     #   pyprophet (setup.py)