diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 60df28e941..a27bf159a8 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -82,3 +82,6 @@ f48453e60a8d11f74acc7a10d3a9da90b8acd4af
 
 # Scala Steward: Reformat with scalafmt 3.9.7
 9577b01b1005bd39eff05dfa2aa7212905605e7d
+
+# Scala Steward: Reformat with scalafmt 3.9.9
+952b3f29b1c9d38afdd4a47283e77941b8b82f10