diff --git a/Cargo.lock.msrv b/Cargo.lock.msrv
index dceef63..3d2ee27 100644
--- a/Cargo.lock.msrv
+++ b/Cargo.lock.msrv
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "bstr"
-version = "1.12.0"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "234113d19d0d7d613b40e86fb654acf958910802bcceab913a4f9e7cda03b1a4"
+checksum = "05efc5cfd9110c8416e471df0e96702d58690178e206e61b7173706673c93706"
 dependencies = [
  "memchr",
  "regex-automata",