diff --git a/main/src/main.rs b/main/src/main.rs
index 47e285d..7ffa008 100644
--- a/main/src/main.rs
+++ b/main/src/main.rs
@@ -4,8 +4,15 @@
 use cargo_stylus_util::{color::Color, sys};
 use clap::Parser;
 use eyre::{bail, Result};
+
+// Conditional import for Unix-specific `CommandExt`
+#[cfg(unix)]
 use std::{env, os::unix::process::CommandExt};
 
+// Conditional import for Windows
+#[cfg(windows)]
+use std::env;
+
 #[derive(Parser, Debug)]
 #[command(name = "stylus")]
 #[command(bin_name = "cargo stylus")]
@@ -124,8 +131,15 @@ fn main() -> Result<()> {
         // see if custom extension exists
         let custom = format!("cargo-stylus-{arg}");
         if sys::command_exists(&custom) {
-            let err = sys::new_command(&custom).arg(arg).args(args).exec();
-            bail!("failed to invoke {}: {err}", custom.red());
+            let mut command = sys::new_command(&custom);
+            command.arg(arg).args(args);
+
+            // Execute command conditionally based on the platform
+            #[cfg(unix)]
+            let err = command.exec(); // Unix-specific execution
+            #[cfg(windows)]
+            let err = command.status(); // Windows-specific execution
+            bail!("failed to invoke {:?}: {:?}", custom.red(), err);
         }
 
         eprintln!("Unknown subcommand {}.", arg.red());
@@ -148,6 +162,13 @@ fn main() -> Result<()> {
     }
 
     // should never return
-    let err = sys::new_command(name).arg(arg).args(args).exec();
-    bail!("failed to invoke {}: {err}", name.red());
+    let mut command = sys::new_command(name);
+    command.arg(arg).args(args);
+
+    // Execute command conditionally based on the platform
+    #[cfg(unix)]
+    let err = command.exec(); // Unix-specific execution
+    #[cfg(windows)]
+    let err = command.status(); // Windows-specific execution
+    bail!("failed to invoke {:?}: {:?}", name.red(), err);
 }
diff --git a/replay/src/main.rs b/replay/src/main.rs
index 485d822..e74b465 100644
--- a/replay/src/main.rs
+++ b/replay/src/main.rs
@@ -6,10 +6,19 @@ use alloy_primitives::TxHash;
 use cargo_stylus_util::{color::Color, sys};
 use clap::{Args, Parser};
 use eyre::{bail, eyre, Context, Result};
+// Conditional import for Unix-specific `CommandExt`
+#[cfg(unix)]
 use std::{
     os::unix::process::CommandExt,
     path::{Path, PathBuf},
 };
+
+// Conditional import for Windows
+#[cfg(windows)]
+use std::{
+    env,
+    path::{Path, PathBuf},
+};
 use tokio::runtime::Builder;
 
 mod hostio;
@@ -127,9 +136,12 @@ async fn replay(args: ReplayArgs) -> Result<()> {
             cmd.arg(arg);
         }
         cmd.arg("--child");
+        #[cfg(unix)]
         let err = cmd.exec();
+        #[cfg(windows)]
+        let err = cmd.status();
 
-        bail!("failed to exec gdb {}", err);
+        bail!("failed to exec gdb {:?}", err);
     }
 
     let provider = sys::new_provider(&args.endpoint)?;