diff --git a/tasks/coverage/src/main.rs b/tasks/coverage/src/main.rs
index ffe90f7e00415..9a123c2a2551c 100644
--- a/tasks/coverage/src/main.rs
+++ b/tasks/coverage/src/main.rs
@@ -1,7 +1,10 @@
-use oxc_coverage::AppArgs;
+use std::num::NonZeroUsize;
+
 use pico_args::Arguments;
 use rayon::ThreadPoolBuilder;
 
+use oxc_coverage::AppArgs;
+
 fn main() {
     let mut args = Arguments::from_env();
     let command = args.subcommand().expect("subcommands");
@@ -13,9 +16,13 @@ fn main() {
         diff: args.contains("--diff"),
     };
 
-    if args.debug {
-        ThreadPoolBuilder::new().num_threads(1).build_global().unwrap();
-    }
+    // Init rayon thread pool
+    let thread_count = if args.debug {
+        1
+    } else {
+        std::thread::available_parallelism().map(NonZeroUsize::get).unwrap_or(1)
+    };
+    ThreadPoolBuilder::new().num_threads(thread_count).build_global().unwrap();
 
     let task = command.as_deref().unwrap_or("default");
     match task {