diff --git a/tox.ini b/tox.ini
index 30a908cd3..9c20759af 100644
--- a/tox.ini
+++ b/tox.ini
@@ -70,7 +70,7 @@ basepython = python3
 skip_install = True
 commands_pre =
 deps =
-    vendoring>=0.3.3
+    vendoring~=0.3.3
     # Required, otherwise we interpret --no-binary :all: as
     # "do not build wheels", which fails for PEP 517 requirements
     pip>=19.3.1