diff --git a/.devcontainer/__CMakeLists.txt__ b/.devcontainer/__CMakeLists.txt__
old mode 100755
new mode 100644
diff --git a/.devcontainer/__lv_conf.h__ b/.devcontainer/__lv_conf.h__
old mode 100755
new mode 100644
diff --git a/.devcontainer/__main.c__ b/.devcontainer/__main.c__
old mode 100755
new mode 100644
diff --git a/.devcontainer/lvgl_shell.html b/.devcontainer/lvgl_shell.html
old mode 100755
new mode 100644
diff --git a/demos/music/assets/spectrum.py b/demos/music/assets/spectrum.py
index aca370264e..1b4294a32f 100755
--- a/demos/music/assets/spectrum.py
+++ b/demos/music/assets/spectrum.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import numpy as np
 import librosa
 import math
diff --git a/demos/widgets/lv_demo_widgets.py b/demos/widgets/lv_demo_widgets.py
old mode 100755
new mode 100644
diff --git a/docs/conf.py b/docs/conf.py
old mode 100644
new mode 100755
diff --git a/docs/misc/perfetto_ui.png b/docs/misc/perfetto_ui.png
old mode 100755
new mode 100644
diff --git a/env_support/cmsis-pack/gen_pack.sh b/env_support/cmsis-pack/gen_pack.sh
old mode 100644
new mode 100755
diff --git a/examples/header.py b/examples/header.py
old mode 100644
new mode 100755
diff --git a/examples/libs/bmp/lv_example_bmp_1.py b/examples/libs/bmp/lv_example_bmp_1.py
old mode 100755
new mode 100644
diff --git a/examples/libs/ffmpeg/lv_example_ffmpeg_1.py b/examples/libs/ffmpeg/lv_example_ffmpeg_1.py
old mode 100644
new mode 100755
diff --git a/examples/libs/ffmpeg/lv_example_ffmpeg_2.py b/examples/libs/ffmpeg/lv_example_ffmpeg_2.py
old mode 100644
new mode 100755
diff --git a/examples/widgets/chart/lv_example_chart_4.py b/examples/widgets/chart/lv_example_chart_4.py
old mode 100644
new mode 100755
diff --git a/examples/widgets/img/lv_example_img_1.py b/examples/widgets/img/lv_example_img_1.py
old mode 100644
new mode 100755
diff --git a/examples/widgets/img/lv_example_img_2.py b/examples/widgets/img/lv_example_img_2.py
old mode 100644
new mode 100755
diff --git a/examples/widgets/img/lv_example_img_3.py b/examples/widgets/img/lv_example_img_3.py
old mode 100644
new mode 100755
diff --git a/examples/widgets/label/lv_example_label_1.py b/examples/widgets/label/lv_example_label_1.py
old mode 100644
new mode 100755
diff --git a/examples/widgets/span/lv_example_span_1.py b/examples/widgets/span/lv_example_span_1.py
old mode 100644
new mode 100755
diff --git a/scripts/changelog_gen.sh b/scripts/changelog_gen.sh
index 0dd73cd3bc..a1476517fd 100755
--- a/scripts/changelog_gen.sh
+++ b/scripts/changelog_gen.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # Generate CHANGELOG_LAST.md from changes since the last version tag. (vx.y.z-dev tags are ignored)
 # CHANGELOG_LAST.md can be edited manually if required and manually added to docs/CHANGELOG.md
 #
diff --git a/scripts/cppcheck_run.sh b/scripts/cppcheck_run.sh
index 3916c76721..f7e30725bd 100755
--- a/scripts/cppcheck_run.sh
+++ b/scripts/cppcheck_run.sh
@@ -1 +1,3 @@
+#!/bin/sh
+
 cppcheck -j8 --template="{severity}\t{file}:{line}\t{id}: {message}" --enable=all ../src/ --output-file=cppcheck_res.txt --suppress=unusedFunction --suppress=preprocessorErrorDirective --force
diff --git a/scripts/infer_run.sh b/scripts/infer_run.sh
index f1d12235a9..cfb9942d4e 100755
--- a/scripts/infer_run.sh
+++ b/scripts/infer_run.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # https://github.com/facebook/infer
 #
 # Install:
diff --git a/scripts/install-prerequisites.sh b/scripts/install-prerequisites.sh
index 9c931c01af..737cd47729 100755
--- a/scripts/install-prerequisites.sh
+++ b/scripts/install-prerequisites.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/bin/sh
 
 # Install Linux package prerequisites needed for LVGL development
 # and testing. Some less-common development packages are not included
diff --git a/scripts/jpg_to_sjpg.py b/scripts/jpg_to_sjpg.py
index 05eaaa1c57..5a005bfee9 100755
--- a/scripts/jpg_to_sjpg.py
+++ b/scripts/jpg_to_sjpg.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 ##################################################################
 # sjpeg converter script version 1.0
 # Dependencies: (PYTHON-3)
diff --git a/scripts/release/release.py b/scripts/release/release.py
old mode 100644
new mode 100755