diff --git a/Cargo.lock b/Cargo.lock
index bd9050a..8905fb5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -190,6 +190,12 @@ version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
 
+[[package]]
+name = "either"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11157ac094ffbdde99aa67b23417ebdd801842852b500e395a45a9c0aac03e4a"
+
 [[package]]
 name = "email-encoding"
 version = "0.3.0"
@@ -471,6 +477,15 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.60"
@@ -678,9 +693,9 @@ dependencies = [
 
 [[package]]
 name = "ouroboros"
-version = "0.16.0"
+version = "0.18.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6a6d0919a92ba28d8109a103e0de08f89706be0eeaad1130fd1a34030dee84a"
+checksum = "97b7be5a8a3462b752f4be3ff2b2bf2f7f1d00834902e46be2a4d68b87b0573c"
 dependencies = [
  "aliasable",
  "ouroboros_macro",
@@ -689,13 +704,14 @@ dependencies = [
 
 [[package]]
 name = "ouroboros_macro"
-version = "0.16.0"
+version = "0.18.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46bc2307dc3420554ae349230dac4969c66d7c2feead3a8cab05ea0c604daca6"
+checksum = "b645dcde5f119c2c454a92d0dfa271a2a3b205da92e4292a68ead4bdbfde1f33"
 dependencies = [
  "heck 0.4.1",
- "proc-macro-error",
+ "itertools",
  "proc-macro2",
+ "proc-macro2-diagnostics",
  "quote",
  "syn 2.0.43",
 ]
@@ -757,6 +773,19 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "proc-macro2-diagnostics"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af066a9c399a26e020ada66a034357a868728e72cd426f3adcd35f80d88d88c8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.43",
+ "version_check",
+ "yansi",
+]
+
 [[package]]
 name = "psm"
 version = "0.1.21"
@@ -1447,6 +1476,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
 
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"
+
 [[package]]
 name = "zerocopy"
 version = "0.7.32"
diff --git a/Cargo.toml b/Cargo.toml
index 6f72249..49d1dbe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ nom = { version = "7.1.0", default-features = false }
 base64 = "0.22"
 chrono = { version = "0.4", default-features = false, features = ["std"]}
 lazy_static = "1.4"
-ouroboros = "0.16.0"
+ouroboros = "0.18.0"
 
 [dev-dependencies]
 lettre = "0.11"
diff --git a/src/client.rs b/src/client.rs
index 2c6cdfc..3af76cf 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1741,7 +1741,6 @@ pub(crate) mod testutils {
 
 #[cfg(test)]
 mod tests {
-    use super::super::error::Result;
     use super::super::mock_stream::MockStream;
     use super::*;
     use imap_proto::types::Capability;