diff --git a/.github/workflows/openwrt-ci.yml b/.github/workflows/openwrt-ci.yml
index da0dbfc08..8fa4c5a87 100644
--- a/.github/workflows/openwrt-ci.yml
+++ b/.github/workflows/openwrt-ci.yml
@@ -53,6 +53,7 @@ jobs:
           sudo rm -rf /usr/share/dotnet /etc/mysql /etc/php /etc/apt/sources.list.d /usr/local/lib/android
           sudo -E apt-get -y purge azure-cli ghc* zulu* hhvm llvm* firefox google* dotnet* powershell openjdk* adoptopenjdk* mysql* php* mongodb* dotnet* moby* snapd* || true
           sudo -E apt-get update 
+          sudo -E apt-mark hold grub-efi-amd64-signed
           sudo -E apt-get -y install ack antlr3 aria2 asciidoc autoconf automake autopoint binutils bison build-essential bzip2 ccache cmake cpio curl device-tree-compiler fastjar flex gawk gettext gcc-multilib g++-multilib git gperf haveged help2man intltool libc6-dev-i386 libelf-dev libglib2.0-dev libgmp3-dev libltdl-dev libmpc-dev libmpfr-dev libncurses5-dev libncursesw5-dev libreadline-dev libssl-dev libtool lrzsz mkisofs msmtp nano ninja-build p7zip p7zip-full patch pkgconf python2.7 python3 python3-pip libpython3-dev qemu-utils rsync scons squashfs-tools subversion swig texinfo uglifyjs upx-ucl unzip vim wget xmlto xxd zlib1g-dev
           sudo -E apt-get -y autoremove --purge
           sudo -E apt-get clean