diff --git a/tox.ini b/tox.ini
index 085231e..bb0e1f6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -99,6 +99,7 @@ setenv =
     PYTHONDEVMODE=1
     PIP_DISABLE_PIP_VERSION_CHECK=1
     PIP_PREFER_BINARY=1
+    UNSAFE_PYO3_SKIP_VERSION_CHECK=1
 skip_install = True
 changedir = {toxinidir}
 deps =