diff --git a/Libraries/LibJS/Lexer.cpp b/Libraries/LibJS/Lexer.cpp
index a7564f9b46..15aa4c8026 100644
--- a/Libraries/LibJS/Lexer.cpp
+++ b/Libraries/LibJS/Lexer.cpp
@@ -93,6 +93,8 @@ Lexer::Lexer(StringView source)
         s_two_char_tokens.set("??", TokenType::DoubleQuestionMark);
         s_two_char_tokens.set("**", TokenType::DoubleAsterisk);
         s_two_char_tokens.set("==", TokenType::EqualsEquals);
+        s_two_char_tokens.set("<=", TokenType::LessThanEquals);
+        s_two_char_tokens.set(">=", TokenType::GreaterThanEquals);
         s_two_char_tokens.set("!=", TokenType::ExclamationMarkEquals);
         s_two_char_tokens.set("--", TokenType::MinusMinus);
         s_two_char_tokens.set("++", TokenType::PlusPlus);