diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 000000000..ca3e625b5
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,2 @@
+# Ignore the commit where all the sources were reformatted with no other changes.
+ac8da77c937f3c98c3959f72e76184b6b577cf38