diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index a798490c6..caf616ab9 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -2,3 +2,5 @@
 1277d8e5ab6457ed18d291100539f31d1bdb2d7c
 # enforced .editorconfig eol settings
 fbb026ef1145fe29e0ec3c1b66a3e99cac51e18d
+# Black/Ruff'd test framework code.
+c9d9fa58b796532320a2248ddc5be07b7280adf3