diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 2163db45b..528b128b1 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -2,3 +2,6 @@
 
 # tabs -> spaces
 bbb3b3e6f6e3c0f95873f22e6d0a4aaf350f49d9
+
+# (nix) alejandra -> nixfmt
+4c81d8c53d09196426568c4a31a4e752ed05397a