diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0ad58b2..b2ac692 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,7 +1,7 @@
 chardet==3.0.4
-Cython==0.28.5
+Cython==0.29.14
 nose==1.3.7
-tox==3.4.0
-wheel==0.31.1
-#autopep8==1.4
-#pylint==2.1.1
+tox==3.14.1
+wheel==0.33.6
+#autopep8==1.4.4
+#pylint==2.4.4