diff --git a/web/backend/Dockerfile b/web/backend/Dockerfile
index 8b65870..b85e63f 100644
--- a/web/backend/Dockerfile
+++ b/web/backend/Dockerfile
@@ -8,8 +8,8 @@ COPY src /app/Backend/src
 RUN julia --project=. -e 'using Pkg; Pkg.develop(path="Backend"); Pkg.add("HiGHS"); Pkg.add("JuMP"); Pkg.precompile()'
 COPY docker/startup.jl ./
 
-# Set timezone to US/Chicago
-ENV TZ=US/Chicago
+# Set timezone to Chicago
+ENV TZ=America/Chicago
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
 # Set default environment variables