README.adoc in versionaire-8.7.0 vs README.adoc in versionaire-9.0.0

@@ -126,10 +126,10 @@
 Versionaire::Version major: 1, minor: 0, patch: 0
 Versionaire::Version version
 ----
 
 Each of these conversions will result in a version object that represents "`1.0.0`". When attempting
-to convert an unsupported type, a `+Versionaire::Errors::Conversion+` exception will be thrown.
+to convert an unsupported type, a `+Versionaire::Errors::Cast+` exception will be thrown.
 
 ==== Refinement
 
 Building upon the examples shown above, there is an even more elegant solution where you can use
 this gem's built-in link:https://www.alchemists.io/articles/ruby_refinements[refinement] support: