diff --git a/tox.ini b/tox.ini
index e6a8363..89c29c0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ deps =
 [base]
 passenv = *
 setenv =
-    PYTHONPATH = {toxinidir}/src
+    PYTHONPATH = {toxinidir}/library
     LC_ALL = C
 changedir = {toxinidir}/tests
 covtarget = network_connections