diff --git a/frameworks/roda/Dockerfile b/frameworks/roda/Dockerfile
index 33d857055..82837dd4a 100644
--- a/frameworks/roda/Dockerfile
+++ b/frameworks/roda/Dockerfile
@@ -9,6 +9,7 @@ ENV LD_PRELOAD=libjemalloc.so.2
 
 ENV RUBY_YJIT_ENABLE=1
 ENV RUBY_MN_THREADS=1
+ENV RUBY_MAX_CPU=$(nproc)
 ENV RACK_ENV=production
 ENV WEB_CONCURRENCY=auto
 ENV MAX_THREADS=4