diff --git a/cython/requirements.txt b/cython/requirements.txt
index 13c89b7e3..38ff800c3 100644
--- a/cython/requirements.txt
+++ b/cython/requirements.txt
@@ -1,2 +1,2 @@
-Cython==0.24.1
+Cython==0.25.1
 numpy==1.11.1