diff --git a/bin/swh-objstorage-add-dir b/bin/swh-objstorage-add-dir
index c1dd69d..59bdabf 100755
--- a/bin/swh-objstorage-add-dir
+++ b/bin/swh-objstorage-add-dir
@@ -1,37 +1,37 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # Copyright (C) 2015  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import logging
 import os
 import sys
 
 from swh.storage import objstorage
 
 if __name__ == '__main__':
     try:
         root_dir = sys.argv[1]
         dirname = sys.argv[2]
     except IndexError:
         print("Usage: swh-objstorage-add-dir OBJ_STORAGE_DIR DATA_DIR")
         sys.exit(1)
 
     logging.basicConfig(level=logging.INFO)
 
     objs = objstorage.ObjStorage(root_dir)
 
     dups = 0
     for root, _dirs, files in os.walk(dirname):
         for name in files:
             path = os.path.join(root, name)
             with open(path, 'rb') as f:
                 try:
                     objs.add(f.read())
                 except objstorage.DuplicateObjError:
                     dups += 1
 
     if dups:
         logging.info('skipped %d duplicate(s) file(s)' % dups)
diff --git a/bin/swh-objstorage-fsck b/bin/swh-objstorage-fsck
index b277883..67f3851 100755
--- a/bin/swh-objstorage-fsck
+++ b/bin/swh-objstorage-fsck
@@ -1,28 +1,28 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # Copyright (C) 2015  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import logging
 import sys
 
 from swh.storage import objstorage
 
 if __name__ == '__main__':
     try:
         root_dir = sys.argv[1]
     except IndexError:
         print("Usage: swh-objstorage-add-dir OBJ_STORAGE_DIR")
         sys.exit(1)
 
     logging.basicConfig(level=logging.INFO)
 
     objs = objstorage.ObjStorage(root_dir)
 
     for obj_id in objs:
         try:
             objs.check(obj_id)
         except objstorage.Error as err:
             logging.error(err)