diff --git a/tox.ini b/tox.ini
index c7e3a91e..00bd1210 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,7 +17,7 @@ commands=
     unit2 discover -s tests/unit -p test_*_py3*.py
 
 [testenv:coveralls]
-passenv=COVERALLS_GIT_BRANCH COVERALLS_REPO_TOKEN DEPENDENCY_INJECTOR_DEBUG_MODE
+passenv=COVERALLS_GIT_BRANCH COVERALLS_REPO_TOKEN
 basepython=python3.9
 usedevelop=True
 deps=