diff --git a/acc-web/Dockerfile b/acc-web/Dockerfile
index a604c0c..9fc581f 100644
--- a/acc-web/Dockerfile
+++ b/acc-web/Dockerfile
@@ -12,7 +12,7 @@ RUN apt install steamcmd
 RUN wget https://github.com/assetto-corsa-web/accweb/releases/download/v1.21.0/accweb_v1.21.0.zip
 
 RUN mkdir -p /accserver
-RUN steamcmd +@sSteamCmdForcePlatformType windows +force_install_dir ~/accserver +login anonymous +app_update 1430110 +quit
+RUN steamcmd +@sSteamCmdForcePlatformType windows +force_install_dir ~/accserver +login anonymous +app_update 1430110 validate +quit
 
 RUN unzip accweb_v1.21.0.zip -d /accweb