diff --git a/acme_common/Cargo.toml b/acme_common/Cargo.toml
index 4958a74..eed0737 100644
--- a/acme_common/Cargo.toml
+++ b/acme_common/Cargo.toml
@@ -23,7 +23,7 @@ serde_json = "1.0"
 syslog = "4.0"
 time = "0.1"
 toml = "0.5"
-x509-parser = "0.4"
+x509-parser = "0.6"
 
 [target.'cfg(unix)'.dependencies]
 nix = "0.15"