diff --git a/dotfiles/bashrc b/dotfiles/bashrc
index ee49c88..9d42906 100644
--- a/dotfiles/bashrc
+++ b/dotfiles/bashrc
@@ -14,6 +14,7 @@ export LANG=en_US.UTF-8
 export LC_ALL=en_US.UTF-8
 export NODE_PATH=/usr/local/lib/node_modules
 export PATH=$HOME/.sysconf/bin:$GOPATH/bin:$GRADLE_HOME/bin:$JAVA_HOME/bin:/usr/sbin:$PATH
+export PIP_BREAK_SYSTEM_PACKAGES=1
 export PIP_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple
 export TRASH_DIR=$HOME/.local/share/Trash
 
@@ -56,7 +57,7 @@ alias lh='ls -lh'
 alias ll='ls -l'
 alias ls='ls --color=auto'
 alias psync='rsync -Pz --info=progress2'
-alias pyfmt='bash -c "isort \$0 && black \$0"'
+alias pyfmt='bash -c "isort \$0 && black --line-length 120 \$0"'
 alias randn='shuf -i 1-9223372036854775807 -n 1'
 alias rm='rm -I'
 alias si='sudo -i'
diff --git a/dotfiles/config/Code/User/settings.json b/dotfiles/config/Code/User/settings.json
index 7a88ff2..83e4931 100644
--- a/dotfiles/config/Code/User/settings.json
+++ b/dotfiles/config/Code/User/settings.json
@@ -49,6 +49,10 @@
     "preserve_newlines": true,
     "selector_separator_newline": false
   },
+  "black-formatter.args": [
+    "--line-length",
+    "120"
+  ],
   "debug.console.fontFamily": "Courier Prime Code",
   "debug.console.fontSize": 12,
   "debug.javascript.codelens.npmScripts": "never",