diff --git a/src/cli.rs b/src/cli.rs
index 4dcaa45..0230610 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -5,7 +5,7 @@
 
 use std::{cell::OnceCell, sync::OnceLock};
 
-use clap::{arg, command, crate_authors, value_parser, Arg, Command};
+use clap::{arg, command, crate_authors, value_parser, Arg, ArgAction, Command};
 
 const DEFAULT_CACHE: &str = "cache.nixos.org";
 
@@ -29,5 +29,10 @@ pub fn build_cli() -> Command {
                 .required(false)
                 .value_parser(value_parser!(PathBuf)),
         )
+        .arg(
+            arg!(--timestamp "Add timestamp to log output.")
+                .action(ArgAction::SetTrue)
+                .required(false),
+        )
         .arg(arg!(-v --verbose ... "Verbosity level."))
 }
diff --git a/src/main.rs b/src/main.rs
index 3112e81..e1a0bcb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -51,9 +51,15 @@ async fn main() -> io::Result<()> {
     }
 
     //pretty_env_logger::init();
-    pretty_env_logger::formatted_timed_builder()
-        .parse_env("RUST_LOG")
-        .init();
+    if matches.get_flag("timestamp") {
+        pretty_env_logger::formatted_timed_builder()
+            .parse_env("RUST_LOG")
+            .init();
+    } else {
+        pretty_env_logger::formatted_builder()
+            .parse_env("RUST_LOG")
+            .init();
+    }
 
     if let Some(name) = matches.get_one::<String>("name") {
         host_name = name.to_owned();