diff --git a/src/main.rs b/src/main.rs
index bbdb7e5..a0b6f33 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,7 +10,7 @@ use std::sync::{
 };
 use std::time::Duration;
 
-use aho_corasick::AhoCorasick;
+use aho_corasick::{AhoCorasick, AhoCorasickKind, MatchKind};
 use clap::Parser;
 use dashmap::DashMap;
 use indicatif::{ProgressBar, ProgressState, ProgressStyle};
@@ -47,7 +47,14 @@ static KEYWORDS: &[&str] = &[
     "物联网",
     "机器学习",
 ];
-static ANALYZER: Lazy<AhoCorasick> = Lazy::new(|| AhoCorasick::new(KEYWORDS.iter()).unwrap());
+static ANALYZER: Lazy<AhoCorasick> = Lazy::new(|| {
+    AhoCorasick::builder()
+        .kind(Some(AhoCorasickKind::DFA))
+        .match_kind(MatchKind::Standard)
+        .prefilter(true)
+        .build(KEYWORDS.iter())
+        .unwrap()
+});
 
 #[derive(Parser, Debug)]
 #[command(version, about, long_about = None)]