diff --git a/deployment/scripts/tabby.sh b/deployment/scripts/tabby.sh
index 908a910..9810290 100755
--- a/deployment/scripts/tabby.sh
+++ b/deployment/scripts/tabby.sh
@@ -9,6 +9,10 @@ export CONFIG_FILE=${CONFIG_FILE:-/data/config/tabby.toml}
 # server
 export MODEL_NAME="${MODEL_NAME:-TabbyML/J-350M}"
 export MODEL_BACKEND="${MODEL_BACKEND:-python}"
+if [ ! -n "$WEB_CONCURRENCY" ]; then
+  # Set WEB_CONCURRENCY for uvicorn workers.
+  export WEB_CONCURRENCY=$(nproc --all)
+fi
 
 # projects
 export GIT_REPOSITORIES_DIR="${REPOSITORIES_DIR:-/data/repositories}"