diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index e3c77197..cc8317ef 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -24,3 +24,6 @@ d4d48a8f3827ada32311014506693ed8126d1b9e
 
 # Scala Steward: Reformat with scalafmt 3.8.3
 c33cbf37368d76f839d702d325291536fed39911
+
+# Scala Steward: Reformat with scalafmt 3.8.4
+b705d64a4a3f3c060ac64b68f7a6891cea7a81ca