diff --git a/src/admin/socket.rs b/src/admin/socket.rs
index 303c5cf..eb11cfe 100644
--- a/src/admin/socket.rs
+++ b/src/admin/socket.rs
@@ -422,6 +422,7 @@ mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme-cache"
 acme_directory = "staging"
+acme_contact = "mailto:admin@test.local"
 
 [[listeners.sites]]
 host = "test.local"
@@ -563,6 +564,7 @@ mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme-cache"
 acme_directory = "staging"
+acme_contact = "mailto:admin@test.local"
 
 [[listeners.sites]]
 host = "test.local"
diff --git a/src/cli.rs b/src/cli.rs
index 3f59767..89323ea 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -274,6 +274,7 @@ https_port = 443
 mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme"
+acme_contact = "mailto:admin@test.local"
 "#;
         let config_path = dir.path().join("config.toml");
         std::fs::write(&config_path, toml).unwrap();
@@ -311,6 +312,7 @@ https_port = 443
 mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme"
+acme_contact = "mailto:admin@test.local"
 "#;
         let config_path = dir.path().join("config.toml");
         std::fs::write(&config_path, toml).unwrap();
@@ -367,6 +369,7 @@ https_port = 443
 mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme"
+acme_contact = "mailto:admin@test.local"
 "#;
         let config_path = dir.path().join("config.toml");
         std::fs::write(&config_path, toml).unwrap();
diff --git a/src/shutdown.rs b/src/shutdown.rs
index e0eef33..4bfb2b4 100644
--- a/src/shutdown.rs
+++ b/src/shutdown.rs
@@ -198,6 +198,7 @@ mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme-cache"
 acme_directory = "staging"
+acme_contact = "mailto:admin@test.local"
 
 [[listeners.sites]]
 host = "test.local"
diff --git a/src/tls/acceptor.rs b/src/tls/acceptor.rs
index 4f05eae..d12e32a 100644
--- a/src/tls/acceptor.rs
+++ b/src/tls/acceptor.rs
@@ -209,4 +209,4 @@ mod tests {
         let err = result.unwrap_err().to_string();
         assert!(err.contains("unknown TLS mode"));
     }
-}
\ No newline at end of file
+}
diff --git a/tests/integration_test.rs b/tests/integration_test.rs
index 4ef164d..025a08a 100644
--- a/tests/integration_test.rs
+++ b/tests/integration_test.rs
@@ -511,6 +511,7 @@ https_port = 443
 mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme-cache"
+acme_contact = "mailto:admin@test.local"
 
 [[listeners.sites]]
 host = "test.local"
@@ -818,6 +819,7 @@ https_port = 443
 mode = "acme"
 acme_domains = ["test.local"]
 acme_cache_dir = "/tmp/acme-cache"
+acme_contact = "mailto:admin@test.local"
 acme_directory = "staging"
 
 [[listeners.sites]]