diff --git a/disk_cleanup.sh b/disk_cleanup.sh
index 33e0f558..2bb70963 100755
--- a/disk_cleanup.sh
+++ b/disk_cleanup.sh
@@ -17,4 +17,8 @@ sudo rm -rf /opt/ghc
 # Android SDK の削除
 sudo rm -rf /usr/local/lib/android
 
+# 未使用パッケージを削除
+sudo apt-get remove aspnetcore-* dotnet-* firefox gcc libmysqlclient* mysql-*
+sudo apt-get autoremove --purge
+
 df -h
diff --git a/scripts/apt_install.sh b/scripts/apt_install.sh
index de57c700..5d3e2573 100755
--- a/scripts/apt_install.sh
+++ b/scripts/apt_install.sh
@@ -4,19 +4,20 @@ set -ex
 
 export DEBIAN_FRONTEND=noninteractive
 
-apt-get remove -y gcc
-apt-get autoremove
-
 apt-get update --fix-missing
 apt-get upgrade -y
 
-apt-get install -y \
+apt-get install -y --no-install-recommends \
   binutils \
+  ca-certificates \
+  clang \
   cmake \
   curl \
   git \
   lsb-release \
   make \
+  ninja-build \
+  patch \
   pkg-config \
   python3 \
   rsync \