diff --git a/Cargo.lock b/Cargo.lock
index 859eb511..3eabc757 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,27 +1,27 @@
 [root]
 name = "sass-rs"
-version = "0.0.16"
+version = "0.0.17"
 dependencies = [
- "libc 0.1.7 (registry+/~https://github.com/rust-lang/crates.io-index)",
- "sass-sys 0.0.12 (registry+/~https://github.com/rust-lang/crates.io-index)",
+ "libc 0.1.12 (registry+/~https://github.com/rust-lang/crates.io-index)",
+ "sass-sys 0.0.13 (registry+/~https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "libc"
-version = "0.1.7"
+version = "0.1.12"
 source = "registry+/~https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.4"
+version = "0.3.6"
 source = "registry+/~https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "sass-sys"
-version = "0.0.12"
+version = "0.0.13"
 source = "registry+/~https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.1.7 (registry+/~https://github.com/rust-lang/crates.io-index)",
- "pkg-config 0.3.4 (registry+/~https://github.com/rust-lang/crates.io-index)",
+ "libc 0.1.12 (registry+/~https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.6 (registry+/~https://github.com/rust-lang/crates.io-index)",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index e9bf16ff..bd6e292b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,4 +17,4 @@ path = "src/lib.rs"
 
 [dependencies]
 sass-sys = "0"
-libc = "0"
+libc = "0.1"