diff --git a/tox.ini b/tox.ini
index c80d84ab..474b5f0a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,6 +25,7 @@ passenv = *
 [testenv:clean]
 setenv =
     COVERAGE_FILE = .coverage
+deps = coverage
 commands = coverage erase
 skip_install = true
 
@@ -43,6 +44,7 @@ skip_install = true
 setenv =
     COVERAGE_FILE = .coverage
 deps =
+    coverage
     codecov
     coveralls
 commands =