diff --git a/openapi/build-docs b/openapi/build-docs
index d07d212..b8414fa 100755
--- a/openapi/build-docs
+++ b/openapi/build-docs
@@ -8,5 +8,6 @@ mkdir out
 openapi-generate-html \
   --input petstore.yaml \
   --output out/docs.html \
+  --theme dark \
   --ui swagger \
   "$@"