diff --git a/Cargo.toml b/Cargo.toml
index d59b15c..b440f8b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,11 @@ include = [
 clap = { version = "4.5.48", features = ["derive"] }
 clap-verbosity-flag = { version = "3.0.4", features = ["tracing"] }
 env_logger = "0.11.8"
+google-gmail1 = "6.0.0"
 log = "0.4.28"
+serde = { version = "1.0.228", features = ["derive"] }
+serde_json = "1.0.145"
+tokio = { version = "1.47.1", features = ["macros", "rt-multi-thread"] }
 
 [lints.clippy]
 uninlined-format-args = "warn"