diff --git a/tox.ini b/tox.ini
index 5d83ea3..6f44c95 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist=
-    py37-pip{241b1,2400,2332,2331,233,2321,232,2312,2311,231,2301,230,2231,223,2222,2221,222,2212,2211,221,2204,2203,2202,2201,220,2131,213,2124,2123,2122,2121,212,2113,2112,2111,211,2101,210,2034,2033,2031,203,2024,2023,2022,2021,202,201,2002,2001,1931,193,1923,1922,1921,192,1911,191,1903,1902,1901,190,181},
+    py37-pip{2400,2332,2331,233,2321,232,2312,2311,231,2301,230,2231,223,2222,2221,222,2212,2211,221,2204,2203,2202,2201,220,2131,213,2124,2123,2122,2121,212,2113,2112,2111,211,2101,210,2034,2033,2031,203,2024,2023,2022,2021,202,201,2002,2001,1931,193,1923,1922,1921,192,1911,191,1903,1902,1901,190,181},
     py38-pip{241b1,2400,2332,2331,233,2321,232,2312,2311,231,2301,230,2231,223,2222,2221,222,2212,2211,221,2204,2203,2202,2201,220,2131,213,2124,2123,2122,2121,212,2113,2112,2111,211,2101,210,2034,2033,2031,203,2024,2023,2022,2021,202,201,2002,2001,1931},
     py39-pip{241b1,2400,2332,2331,233,2321,232,2312,2311,231,2301,230,2231,223,2222,2221,222,2212,2211,221,2204,2203,2202,2201,220,2131,213,2124,2123,2122,2121,212,2113,2112,2111,211,2101,210,2034,2033,2031,203},
     py310-pip{241b1,2400,2332,2331,233,2321,232,2312,2311,231,2301,230,2231,223,2222,2221,222,2212,2211,221,2204,2203,2202,2201,220,2131,213},