diff --git a/bad_user_agents.regex.txt b/bad_user_agents.regex.txt
index a231c3b..cb5d4e4 100644
--- a/bad_user_agents.regex.txt
+++ b/bad_user_agents.regex.txt
@@ -1,3 +1,4 @@
+\b-\b
 \bAmazonbot\b
 \bbytedance\b
 \bBytespider\b