diff --git a/tests/unit/coveralls.py b/tests/unit/coveralls.py
index ef41fda8b..eddeac46b 100644
--- a/tests/unit/coveralls.py
+++ b/tests/unit/coveralls.py
@@ -8,7 +8,7 @@
 # Solution provided by https://stackoverflow.com/questions/32757765/conditional-commands-in-tox-tox-travis-ci-and-coveralls
 
 if __name__ == '__main__':
-    if 'TRAVIS' in os.environ:
+    if 'COVERALLS_REPO_TOKEN' in os.environ:
         rc = call('coveralls')
         sys.stdout.write("Coveralls report from CI.\n")
         # raise SystemExit(rc)
diff --git a/tox.ini b/tox.ini
index db04b1ed8..b1a4438a5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,12 +20,13 @@ commands = flake8 .
 
 [testenv:unit_tests]
 passenv = COVERALLS_REPO_TOKEN
-deps = coverage
+deps = 
+       coverage==4.5.4
        -rrequirements.txt
        -rtests/unit/requirements.txt
 commands = coverage run -m pytest -x tests/unit
 	       coverage report
-           coveralls
+           python tests/unit/coveralls.py
 
 [gh-actions]
 python =