diff --git a/systest/Cargo.toml b/systest/Cargo.toml
index 77d2c2f62a..5cb49f5d7a 100644
--- a/systest/Cargo.toml
+++ b/systest/Cargo.toml
@@ -6,7 +6,7 @@ build = "build.rs"
 
 [dependencies]
 jemalloc-sys = { path = "../jemalloc-sys" }
-libc = "0.1"
+libc = "0.2"
 
 [build-dependencies]
 ctest = { git = "https://github.com/alexcrichton/ctest" }