diff --git a/tox.ini b/tox.ini
index 8d467dedc..dc3e53add 100644
--- a/tox.ini
+++ b/tox.ini
@@ -193,9 +193,7 @@ sitepackages = true
 whitelist_externals =
     rm
 
-deps =
-    -c{env:TOX_CONSTRAINTS_FILE}
-    {env:IR_DEPS}
+deps = {env:IR_DEPS}
 
 passenv =
     {[testenv]passenv}