diff --git a/.gitignore b/.gitignore
index ba8f29b2..3d9965aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -83,6 +83,10 @@ subprojects/kinsol-*/
 subprojects/CLI11-*/
 subprojects/openssl-*/
 subprojects/tomlplusplus-*/
+subprojects/CppAD-*/
+subprojects/mimalloc-*/
+subprojects/unordered_dense*/
+
 *.fbundle
 *.wraplock