diff --git a/nix/boost/.gitignore b/nix/boost/.gitignore
deleted file mode 100644
index 1f188e3b65e..00000000000
--- a/nix/boost/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-*.hpp
-*.cpp
-*.cc
diff --git a/nix/libstore/.gitignore b/nix/libstore/.gitignore
index 512a0d022f9..805301d6d74 100644
--- a/nix/libstore/.gitignore
+++ b/nix/libstore/.gitignore
@@ -1,3 +1,2 @@
-*.cc
-*.hh
 /schema.sql
+/schema.sql.hh
diff --git a/nix/libutil/.gitignore b/nix/libutil/.gitignore
deleted file mode 100644
index e539428b1b9..00000000000
--- a/nix/libutil/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*.cc
-*.hh