diff --git a/.changeset/curvy-pens-watch.md b/.changeset/curvy-pens-watch.md
new file mode 100644
index 000000000000..625006e7a741
--- /dev/null
+++ b/.changeset/curvy-pens-watch.md
@@ -0,0 +1,6 @@
+---
+'@graphql-codegen/cli': patch
+'@graphql-codegen/plugin-helpers': patch
+---
+
+the life cycle hook beforeOneFileWrite is now able to modify the generated content