diff --git a/build.sh b/build.sh
index 5fa630a..ba8bd82 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,2 @@
-n=$(cat buildnumber)
-nn=$((n+1))
 env GOOS=linux GOARCH=amd64 TZ=Asia/Shanghai
-go build -ldflags="-X seatimc/backend/common.LastBuiltAt=$nn.$(date +%Y-%m-%d_%H:%M:%S)+08:00" -o lab
-echo $nn > buildnumber
\ No newline at end of file
+go build -ldflags="-X seatimc/backend/common.LastBuiltAt=$(date +%Y-%m-%d_%H:%M:%S)+08:00" -o lab
\ No newline at end of file
diff --git a/buildnumber b/buildnumber
deleted file mode 100644
index 56a6051..0000000
--- a/buildnumber
+++ /dev/null
@@ -1 +0,0 @@
-1
\ No newline at end of file