--- err-derive-0.2.3/Cargo.toml	2020-03-05T20:43:55+00:00
+++ err-derive-0.2.3/Cargo.toml	2020-04-08T21:05:07.546340+00:00
@@ -25,7 +25,7 @@
 [lib]
 proc-macro = true
 [dependencies.proc-macro-error]
-version = "0.4.4"
+version = "1.0.0"
 
 [dependencies.proc-macro2]
 version = "1.0.1"