diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -3,6 +3,7 @@
 
 [testenv:py3]
 deps =
+  swh.core[http]
   .[testing]
   pytest-cov
 commands =
@@ -11,6 +12,7 @@
 
 [testenv:py3-dev]
 deps =
+  swh.core[http]
   .[testing]
   pytest-cov
   ipdb