diff --git a/acmed/Cargo.toml b/acmed/Cargo.toml
index 289a395..f0b55a2 100644
--- a/acmed/Cargo.toml
+++ b/acmed/Cargo.toml
@@ -23,7 +23,7 @@ openssl_vendored = ["crypto_openssl", "acme_common/openssl_vendored", "attohttpc
 acme_common = { path = "../acme_common" }
 attohttpc = { version = "0.18", default-features = false, features = ["charsets", "json"] }
 bincode = "1.3"
-clap = "2.32"
+clap = "3.0"
 glob = "0.3"
 log = "0.4"
 nom = { version = "7.0", default-features = false, features = [] }
diff --git a/tacd/Cargo.toml b/tacd/Cargo.toml
index 1a28896..0d0cad7 100644
--- a/tacd/Cargo.toml
+++ b/tacd/Cargo.toml
@@ -20,6 +20,6 @@ openssl_vendored = ["crypto_openssl", "acme_common/openssl_vendored"]
 
 [dependencies]
 acme_common = { path = "../acme_common" }
-clap = "2.32"
+clap = "3.0"
 log = "0.4"
 openssl = "0.10"