diff --git a/Dockerfile b/Dockerfile
index bc35af6..56633c7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ WORKDIR /app
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
     APP_PORT=8081 \
-    GUNICORN_CMD_ARGS="--bind=0.0.0.0:${APP_PORT} --workers=4 --threads=2"
+    GUNICORN_CMD_ARGS="--bind=0.0.0.0:8081 --workers=4 --threads=2"
 
 # Install system deps
 RUN apt-get update && apt-get install -y --no-install-recommends \