diff --git a/.gitattributes b/.gitattributes
index 94df7fba..fa2ba7d8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -29,3 +29,10 @@ appveyor.yml export-ignore
 /external/abseil-cpp/conanfile.py export-ignore
 /external/abseil-cpp/**/BUILD.bazel export-ignore
 /external/abseil-cpp/ci/** export-ignore
+
+/external/simde/docker/** export-ignore
+/external/simde/test/** export-ignore
+/external/simde/meson* export-ignore
+/external/simde/*.py export-ignore
+/external/simde/*.yml export-ignore
+/external/simde/*.toml export-ignore