diff --git a/acme_common/Cargo.toml b/acme_common/Cargo.toml
index f763abc..47dfea4 100644
--- a/acme_common/Cargo.toml
+++ b/acme_common/Cargo.toml
@@ -26,4 +26,4 @@ toml = "0.5"
 x509-parser = "0.6"
 
 [target.'cfg(unix)'.dependencies]
-nix = "0.15"
+nix = "0.17"