diff --git a/implementations/rust/preserves-tools/Cargo.toml b/implementations/rust/preserves-tools/Cargo.toml
index aa5f49d..7b91eb8 100644
--- a/implementations/rust/preserves-tools/Cargo.toml
+++ b/implementations/rust/preserves-tools/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "preserves-tools"
-version = "2.2.0"
+version = "2.2.1"
 authors = ["Tony Garnock-Jones <tonyg@leastfixedpoint.com>"]
 edition = "2018"
 description = "Command-line utilities for working with Preserves documents."
@@ -13,5 +13,6 @@ preserves = { path = "../preserves", version = "^2.2.0"}
 preserves-path = { path = "../preserves-path", version = "^2.2.0"}
 
 bytes = "1.0"
-clap = "3.0.0-beta.2"
-clap_generate = "3.0.0-beta.2"
+clap = "=3.0.0-beta.2"
+clap_generate = "=3.0.0-beta.2"
+clap_derive = "=3.0.0-beta.2"