diff --git a/lua52-sys/Cargo.toml b/lua52-sys/Cargo.toml
index 301bb71b..f7bff84b 100644
--- a/lua52-sys/Cargo.toml
+++ b/lua52-sys/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 repository = "https://github.com/tomaka/rust-hl-lua"
 
 [build-dependencies]
-pkg-config = "0.3"
+pkg-config = "0.3.3"
 cc = "1.0"
 
 [dependencies]