diff --git a/Cargo.lock b/Cargo.lock
index 40276b21..484e72d1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1879,9 +1879,9 @@ dependencies = [
 
 [[package]]
 name = "dns-update"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccef4d864bf07191beab1ddaced3e108208058ba0350ce535407e2704aafcc18"
+checksum = "a812298508ba41a918afcceb0a960f807480b9c9254ecf12ff299683bc4fb1bf"
 dependencies = [
  "aws-lc-rs",
  "base64 0.22.1",
diff --git a/crates/common/Cargo.toml b/crates/common/Cargo.toml
index ad20addb..7f85afa5 100644
--- a/crates/common/Cargo.toml
+++ b/crates/common/Cargo.toml
@@ -20,7 +20,7 @@ mail-parser = { version = "0.11", features = ["full_encoding"] }
 mail-builder = { version = "0.4" }
 mail-auth = { version = "0.8" }
 smtp-proto = { version = "0.2", features = ["rkyv"] }
-dns-update = { version = "0.2.0" }
+dns-update = { version = "0.2.1" }
 calcard = { version = "0.3", features = ["rkyv"] }
 ahash = { version = "0.8.2", features = ["serde"] }
 parking_lot = "0.12.1"
diff --git a/crates/registry/src/schema/structs_impl.rs b/crates/registry/src/schema/structs_impl.rs
index 2243dd35..585ebfe6 100644
--- a/crates/registry/src/schema/structs_impl.rs
+++ b/crates/registry/src/schema/structs_impl.rs
@@ -14956,7 +14956,7 @@ impl Default for Imap {
         Self {
             allow_plain_text_auth: false,
             max_auth_failures: 3u64,
-            max_concurrent: Some(6u64),
+            max_concurrent: Some(16u64),
             max_request_rate: Some(Rate {
                 count: 2000u64,
                 period: Duration::from_millis(60000),
diff --git a/crates/services/Cargo.toml b/crates/services/Cargo.toml
index 466e91f5..8a426c11 100644
--- a/crates/services/Cargo.toml
+++ b/crates/services/Cargo.toml
@@ -34,7 +34,7 @@ sha2 = "0.11"
 reqwest = { version = "0.13", default-features = false, features = ["rustls", "http2"]}
 base64 = "0.22"
 compact_str = "0.9.0"
-dns-update = { version = "0.2.0" }
+dns-update = { version = "0.2.1" }
 
 [dev-dependencies]
 
diff --git a/crates/store/src/build/registry.rs b/crates/store/src/build/registry.rs
index 4157441c..1efdab35 100644
--- a/crates/store/src/build/registry.rs
+++ b/crates/store/src/build/registry.rs
@@ -46,7 +46,7 @@ impl RegistryStore {
                         .collect::<String>();
                     eprintln!();
                     eprintln!("════════════════════════════════════════════════════════════");
-                    eprintln!("🔑 Stalwart bootstrap mode — temporary administrator account");
+                    eprintln!("🔑 Stalwart bootstrap mode - temporary administrator account");
                     eprintln!();
                     eprintln!("   username: admin");
                     eprintln!("   password: {password}");
diff --git a/resources/schema/schema.json.gz b/resources/schema/schema.json.gz
index bdccce69..9dc5ed61 100644
Binary files a/resources/schema/schema.json.gz and b/resources/schema/schema.json.gz differ
diff --git a/resources/schema/schema.json.sha256 b/resources/schema/schema.json.sha256
index faada3c8..c87eb0ca 100644
--- a/resources/schema/schema.json.sha256
+++ b/resources/schema/schema.json.sha256
@@ -1 +1 @@
-PL8KZnGtpFbFHjUZNFp4Ety5oqiCIv7amrwZ2gnIHbA
\ No newline at end of file
+cfUVQJSeFKFiYn3iirIvn58LaqJ3_HppFEBrqbXrr-E
\ No newline at end of file
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index fc876a05..644a8a36 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -81,7 +81,7 @@ rkyv = { version = "0.8.10", features = ["little_endian"] }
 compact_str = "0.9.0"
 quick-xml = "0.39"
 jmap-tools = { version = "0.1" }
-dns-update = { version = "0.2.0", features = ["test_provider"] }
+dns-update = { version = "0.2.1", features = ["test_provider"] }
 x509-parser = "0.18"
 
 [target.'cfg(not(target_env = "msvc"))'.dependencies]