diff --git a/trx/__init__.py b/trx/__init__.py
old mode 100755
new mode 100644
diff --git a/trx/fetcher.py b/trx/fetcher.py
index 7fb73ac..469fb8a 100644
--- a/trx/fetcher.py
+++ b/trx/fetcher.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import hashlib
diff --git a/trx/io.py b/trx/io.py
index 97a6f23..e292778 100644
--- a/trx/io.py
+++ b/trx/io.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import os
diff --git a/trx/streamlines_ops.py b/trx/streamlines_ops.py
index 6057d2d..d8aa12a 100644
--- a/trx/streamlines_ops.py
+++ b/trx/streamlines_ops.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import itertools
diff --git a/trx/tests/test_io.py b/trx/tests/test_io.py
index b589da7..33d02bf 100644
--- a/trx/tests/test_io.py
+++ b/trx/tests/test_io.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 from copy import deepcopy
diff --git a/trx/tests/test_memmap.py b/trx/tests/test_memmap.py
index 7ae189d..a671c08 100644
--- a/trx/tests/test_memmap.py
+++ b/trx/tests/test_memmap.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import os
diff --git a/trx/tests/test_streamlines_ops.py b/trx/tests/test_streamlines_ops.py
index 34032c1..3cd2678 100644
--- a/trx/tests/test_streamlines_ops.py
+++ b/trx/tests/test_streamlines_ops.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import numpy as np
diff --git a/trx/trx_file_memmap.py b/trx/trx_file_memmap.py
index ffecf94..0796b67 100644
--- a/trx/trx_file_memmap.py
+++ b/trx/trx_file_memmap.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 from copy import deepcopy
diff --git a/trx/utils.py b/trx/utils.py
index 8c1051b..b58a2a2 100644
--- a/trx/utils.py
+++ b/trx/utils.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 from nibabel.streamlines.tractogram import TractogramItem
diff --git a/trx/viz.py b/trx/viz.py
index f1f9d7d..d5afb9b 100644
--- a/trx/viz.py
+++ b/trx/viz.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import itertools
diff --git a/trx/workflows.py b/trx/workflows.py
index db9d72c..eaa85c5 100644
--- a/trx/workflows.py
+++ b/trx/workflows.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 from copy import deepcopy