diff --git a/actions_install.sh b/actions_install.sh
index 687fb25..e9460fa 100644
--- a/actions_install.sh
+++ b/actions_install.sh
@@ -3,5 +3,5 @@
 set -e
 
 pip3 install clint pyserial setuptools adafruit-nrfutil
-sudo apt install -fy cppcheck clang-format-9
-sudo ln -s /usr/bin/clang-format-9 /usr/bin/clang-format
\ No newline at end of file
+sudo apt install -fy cppcheck clang-format-8
+sudo ln -s /usr/bin/clang-format-8 /usr/bin/clang-format
\ No newline at end of file