diff --git a/implementations/rust/preserves/Cargo.toml b/implementations/rust/preserves/Cargo.toml
index f521fdd..c7c9f7e 100644
--- a/implementations/rust/preserves/Cargo.toml
+++ b/implementations/rust/preserves/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "preserves"
-version = "4.991.0"
+version = "4.991.1"
 authors = ["Tony Garnock-Jones <tonyg@leastfixedpoint.com>"]
 edition = "2018"
 description = "Implementation of the Preserves serialization format via serde."