diff --git a/.gitattributes b/.gitattributes
index 31a62b58ca5e15de7258e7b12b588a7d4f14502e..43b37131d020d057989e155d7a1d565da1c25008 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -268,6 +268,8 @@ README* header_spec=.ignore
 /share/compliance/*.json header_spec=.ignore
 /share/machdeps/machdep-schema.json header_spec=.ignore
 /share/machdeps/machdep_*.json header_spec=.ignore
+/share/machdeps/machdep-schema.yaml header_spec=.ignore
+/share/machdeps/machdep_*.yaml header_spec=.ignore
 /tests/**/* header_spec=.ignore
 
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