diff --git a/main/runner.sh b/main/runner.sh
index 0c50a4c..d7b4b7a 100644
--- a/main/runner.sh
+++ b/main/runner.sh
@@ -5,7 +5,7 @@ set -eu
 
 USER=fithwum
 FILE=config.yaml
-VERSION=0.3.0
+VERSION=0.3.1
 
 # openssh
 apt-get install openssh-client openssh-server
@@ -38,18 +38,20 @@ adduser $USER docker
 # runner install
 cd /usr/local/bin/
 
+rm -fr act_runner_*
+
 wget https://gitea.com/gitea/act_runner/releases/download/v$VERSION/act_runner-$VERSION-linux-amd64
-mv act_runner-*-linux-amd64 act_runner
-chmod +x act_runner
+mv act_runner-*-linux-amd64 act_runner_$VERSION
+chmod +x act_runner_$VERSION
 
 if [ ! -f $FILE ]; then
     echo "[INFO] config not generated yet — generating now..."
-    ./act_runner generate-config | tee $FILE > /dev/null
+    ./act_runner_$VERSION generate-config | tee $FILE > /dev/null
 else
     echo "[INFO] config already generated — skipping generation."
 fi
 
-chown fithwum:docker act_runner
+chown fithwum:docker act_runner_$VERSION
 chown fithwum:docker $FILE
 
 sed -i '/^  labels:/,/^$/c\
@@ -63,7 +65,7 @@ sed -i '/^  labels:/,/^$/c\
 
 if [ ! -f .runner ]; then
     echo "[INFO] Runner not registered yet — registering now..."
-    ./act_runner --config $FILE register --no-interactive --instance <instance_url> --token <registration_token> --name <runner_name>
+    ./act_runner_$VERSION --config $FILE register --no-interactive --instance <instance_url> --token <registration_token> --name <runner_name>
 else
     echo "[INFO] Runner already registered — skipping registration."
 fi
@@ -75,7 +77,7 @@ Documentation=https://gitea.com/gitea/act_runner
 After=docker.service
 
 [Service]
-ExecStart=/usr/local/bin/act_runner daemon --config /usr/local/bin/$FILE
+ExecStart=/usr/local/bin/act_runner_$VERSION daemon --config /usr/local/bin/$FILE
 ExecReload=/bin/kill -s HUP \$MAINPID
 WorkingDirectory=/usr/local/bin
 TimeoutSec=0