diff --git a/requirements-ci.txt b/requirements-ci.txt
index 0e7e0bd461..ea2fabb428 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -4,7 +4,7 @@ pyflakes==1.3.0
 coverage==4.2
 cchardet==1.1.0
 sphinx==1.4.8
-cython==0.24.1
+cython==0.25
 chardet==2.3.0
 isort==4.2.5
 tox==2.4.1
diff --git a/requirements-wheel.txt b/requirements-wheel.txt
index 661209017c..f427e49efc 100644
--- a/requirements-wheel.txt
+++ b/requirements-wheel.txt
@@ -1,3 +1,3 @@
-cython==0.24.1
+cython==0.25
 pytest==3.0.3