diff --git a/Rust.gitignore b/Rust.gitignore
index ff47c2d7..6985cf1b 100644
--- a/Rust.gitignore
+++ b/Rust.gitignore
@@ -9,3 +9,6 @@ Cargo.lock
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb