Update Cargo.toml

Author: mailboxvalidator-com

Cargo.toml

@@ -15,10 +15,10 @@ categories = ["email", "accessibility"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-reqwest = { version = "*", features = ["blocking", "json"] }
-serde = { version = "*", features = ["derive"] }
-serde_json = "*"
-serde_with = "*"
+reqwest = { version = "0.11", features = ["blocking", "json"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+serde_with = "1.6.0"
 
 [lib]
 name = "mailboxvalidator"