diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 0000000..107aa4f
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,2 @@
+# Switch to 100 char line length.
+fa2fa0df18459ebabb89c12bc659dfe98f966ba3