diff --git a/requirements.txt b/requirements.txt
index 7da6145..a6a9564 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 # Add here external Python modules dependencies, one per line. Module names
 # should match https://pypi.python.org/pypi names. For the full spec or
 # dependency lines, see https://pip.readthedocs.org/en/1.1/requirements.html
 vcversioner
-swh.core
+swh.core >= 0.0.14
 swh.storage
-swh.loader.dir
+swh.loader.dir >= 0.0.7
 retrying