diff --git a/.dir-locals.el b/.dir-locals.el
index 0c52d76891..9c8d101f7f 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -73,6 +73,9 @@
 	       (expand-file-name
 		(concat directory-of-current-dir-locals-file "bin/rndc/include"))
 
+	       (expand-file-name "/usr/include/libxml2")
+	       (expand-file-name "/usr/include/json-c")
+	       
 	       (expand-file-name "/usr/local/opt/openssl@1.1/include")
 	       (expand-file-name "/usr/local/opt/libxml2/include/libxml2")
 	       (expand-file-name "/usr/local/opt/json-c/include/json-c/")