diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index c7644d0e6..f09b08660 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -33,3 +33,4 @@ c7ee560e00b85f7486b452c14ff49e4737996eda  # Blacken tools/
 1897784d59e0d5fcda2dd75fea54ddd8be3d502a  # Blacken src/pip/_internal/index
 94999255d5ede440c37137d210666fdf64302e75  # Reformat the codebase, with black
 585037a80a1177f1fa92e159a7079855782e543e  # Cleanup implicit string concatenation
+8a6f6ac19b80a6dc35900a47016c851d9fcd2ee2  # Blacken src/pip/_internal/resolution directory