--- cexpr-0.3.4/Cargo.toml      1970-01-01T01:00:00+01:00
+++ cexpr-0.3.4/Cargo.toml      2019-03-17T17:31:42.133687+01:00
@@ -23,4 +23,4 @@
 version = "^4"
 features = ["verbose-errors"]
 [dev-dependencies.clang-sys]
-version = ">= 0.13.0, < 0.28.0"
+version = ">= 0.13.0, < 0.29.0"