diff --git a/Cargo.toml b/Cargo.toml
index d5289d3a..a470a219 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ syncable = ["mentat_tolstoy", "tolstoy_traits", "mentat_db/syncable"]
 members = ["tools/cli", "ffi"]
 
 [build-dependencies]
-rustc_version = "~0.2"
+rustc_version = "~0.3"
 
 [dev-dependencies]
 assert_approx_eq = "~1.1"