diff --git a/updater/Dockerfile b/updater/Dockerfile
index f17f148..92b16e3 100644
--- a/updater/Dockerfile
+++ b/updater/Dockerfile
@@ -17,7 +17,7 @@ RUN echo \
 # Install git and docker-compose
 RUN apt-get update && \
     apt-get install -y git docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin && \
-    rm -rf /var/lib/apt/lists/* \
+    rm -rf /var/lib/apt/lists/*
 
 # Copy the PHP file to the Apache document root
 COPY webhook.php /var/www/html/index.php