diff --git a/src/regex_lookahead.cpp b/src/regex_lookahead.cpp
index 76e2990..041af3b 100644
--- a/src/regex_lookahead.cpp
+++ b/src/regex_lookahead.cpp
@@ -12,7 +12,6 @@
 #include <pytorch/tokenizers/regex.h>
 #include <pytorch/tokenizers/std_regex.h>
 
-#include <iostream>
 #include <memory>
 
 namespace tokenizers {