diff --git a/.rc.sh b/.rc.sh
index f1e3783..6c4487f 100644
--- a/.rc.sh
+++ b/.rc.sh
@@ -8,6 +8,23 @@ export FLUTTER_STORAGE_BASE_URL=https://mirror.sjtu.edu.cn/
 export CHROME_EXECUTABLE=/usr/bin/microsoft-edge-stable
 export PATH="$HOME/go/bin:$HOME/.local/flutter/bin:$HOME/.local/bin:$PATH"
 
+function yupdate() {
+    cd $HOME
+    now=`date '+%s'`
+    if [ -e .check ]; then
+        before=`cat .check`
+    else
+        before=0
+    fi
+    res=$((now-before))
+    if [ $res -gt 3600 ]; then
+        echo "正在检查dotfiles是否更新"
+        echo $now > .check
+	yadm pull
+    fi
+}
+yupdate
+
 function get_proxy() {
     if [ -e ~/.proxy ]; then
         cat ~/.proxy