diff --git a/tox.ini b/tox.ini
index cb8b62c8..a2f33739 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,7 @@ passenv =
     NEO4J_RELEASES
     NEO4J_USER
     NEO4J_PASSWORD
+    TEAMCITY_VERSION
     TEAMCITY_HOST
     TEAMCITY_USER
     TEAMCITY_PASSWORD