diff --git a/packages/squiggle-lang/package.json b/packages/squiggle-lang/package.json
index a2c93a54..28d8aaa1 100644
--- a/packages/squiggle-lang/package.json
+++ b/packages/squiggle-lang/package.json
@@ -11,6 +11,7 @@
     "test": "jest",
     "test:watch": "jest --watchAll",
     "coverage": "rm -f *.coverage; yarn clean; BISECT_ENABLE=yes yarn build; yarn test; bisect-ppx-report html",
+    "reducer:format": "find src/rescript/Reducer src/rescript/ReducerInterface -type f \\( -name '*.res' -o -name '*.resi' \\) -exec sh -c 'bsc -format {} | sponge {}'  \\;",
     "all": "yarn build && yarn bundle && yarn test"
   },
   "keywords": [