diff --git a/.prettierignore b/.prettierignore
index b7df3e479a3..1b017e6ba35 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -19,3 +19,6 @@ packages/treeshake-server/template/**
 # Task DSL files contain mustache-like placeholders (e.g. `{{assets...}}`)
 # that Prettier currently fails to parse in TSX.
 packages/enhanced/task/**
+
+# Temporarily ignore assemble-release-plan package until build formatting churn is addressed.
+packages/assemble-release-plan/**