diff --git a/ops/charm.py b/ops/charm.py
old mode 100755
new mode 100644
diff --git a/ops/framework.py b/ops/framework.py
old mode 100755
new mode 100644
diff --git a/ops/jujuversion.py b/ops/jujuversion.py
old mode 100755
new mode 100644
diff --git a/ops/main.py b/ops/main.py
old mode 100755
new mode 100644
diff --git a/ops/storage.py b/ops/storage.py
old mode 100755
new mode 100644
diff --git a/ops/testing.py b/ops/testing.py
old mode 100755
new mode 100644
diff --git a/test/test_charm.py b/test/test_charm.py
old mode 100755
new mode 100644
diff --git a/test/test_framework.py b/test/test_framework.py
old mode 100755
new mode 100644
diff --git a/test/test_helpers.py b/test/test_helpers.py
old mode 100755
new mode 100644
diff --git a/test/test_jujuversion.py b/test/test_jujuversion.py
old mode 100755
new mode 100644
diff --git a/test/test_log.py b/test/test_log.py
index 97b735ae6..969bdd9cc 100644
--- a/test/test_log.py
+++ b/test/test_log.py
@@ -1,5 +1,3 @@
-#!/usr/bin/python3
-
 # Copyright 2020 Canonical Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/test/test_main.py b/test/test_main.py
old mode 100755
new mode 100644
diff --git a/test/test_model.py b/test/test_model.py
old mode 100755
new mode 100644
index 51b6d20ff..5ee1dbbaf
--- a/test/test_model.py
+++ b/test/test_model.py
@@ -1,4 +1,3 @@
-#!/usr/bin/python3
 # Copyright 2019 Canonical Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/test/test_pebble.py b/test/test_pebble.py
index af4937d9e..c72431fb5 100644
--- a/test/test_pebble.py
+++ b/test/test_pebble.py
@@ -1,4 +1,3 @@
-#!/usr/bin/python3
 # Copyright 2021 Canonical Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/test/test_real_pebble.py b/test/test_real_pebble.py
index 0e4688832..2fb03a2bb 100644
--- a/test/test_real_pebble.py
+++ b/test/test_real_pebble.py
@@ -1,4 +1,3 @@
-#!/usr/bin/python3
 # Copyright 2021 Canonical Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/test/test_storage.py b/test/test_storage.py
old mode 100755
new mode 100644