diff --git a/pyproject.toml b/pyproject.toml
index b2787bc5edfa..9282c3b8c8d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["Cython>=0.27.1", "setuptools", "wheel", "setuptools-rust"]
+requires = ["setuptools", "wheel", "setuptools-rust"]
 build-backend = "setuptools.build_meta"
 
 [tool.black]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index a83d45b91736..5e5af0f282e8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -14,7 +14,6 @@ pylint==2.8.3
 stestr>=2.0.0
 PyGithub
 wheel
-cython>=0.27.1
 pylatexenc>=1.4
 ddt>=1.2.0,!=1.4.0,!=1.4.3
 seaborn>=0.9.0