diff --git a/.gitattributes b/.gitattributes
index 6513868..642f37d 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,24 @@
 /examples export-ignore
 /ports export-ignore
 /test export-ignore
+
+/ext/lwip-contrib/apps/ export-ignore
+/ext/lwip-contrib/addons/ export-ignore
+/ext/lwip-contrib/Coverity/ export-ignore
+/ext/lwip-contrib/examples/ export-ignore
+/ext/lwip-contrib/*.mk export-ignore
+/ext/lwip-contrib/*.cmake export-ignore
+/ext/lwip/test export-ignore
+/ext/lwip/doc export-ignore
+
+/ext/ZeroTierOne/artwork export-ignore
+/ext/ZeroTierOne/attic export-ignore
+/ext/ZeroTierOne/debian export-ignore
+/ext/ZeroTierOne/doc export-ignore
+/ext/ZeroTierOne/docker export-ignore
+/ext/ZeroTierOne/java export-ignore
+/ext/ZeroTierOne/macui export-ignore
+/ext/ZeroTierOne/rule-compiler export-ignore
+
 .gitattributes export-ignore
 .gitignore export-ignore
\ No newline at end of file