diff --git a/parinfer-rust-mode.el b/parinfer-rust-mode.el
index 4dc16aa..9216c65 100644
--- a/parinfer-rust-mode.el
+++ b/parinfer-rust-mode.el
@@ -143,7 +143,7 @@
 
 ;; 3. Run parinfer-rust and update the state of the buffer accordingly
 
-(defconst parinfer-rust-supported-versions '("0.4.6-beta" "0.4.3")
+(defconst parinfer-rust-supported-versions '("0.4.6-beta1")
   "The Supported versions of the parinfer-rust library.
 
 Versions of the library that `parinfer-rust-mode' was tested