diff --git a/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp b/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
index 1de8d6d935..b3c60b31c6 100644
--- a/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021-2024, Andreas Kling <kling@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -1045,7 +1045,18 @@ ThrowCompletionOr<void> Return::execute_impl(Bytecode::Interpreter& interpreter)
 ThrowCompletionOr<void> Increment::execute_impl(Bytecode::Interpreter& interpreter) const
 {
     auto& vm = interpreter.vm();
-    auto old_value = TRY(interpreter.accumulator().to_numeric(vm));
+    auto old_value = interpreter.accumulator();
+
+    // OPTIMIZATION: Fast path for Int32 values.
+    if (old_value.is_int32()) {
+        auto integer_value = old_value.as_i32();
+        if (integer_value != NumericLimits<i32>::max()) [[likely]] {
+            interpreter.accumulator() = Value { integer_value + 1 };
+            return {};
+        }
+    }
+
+    old_value = TRY(old_value.to_numeric(vm));
 
     if (old_value.is_number())
         interpreter.accumulator() = Value(old_value.as_double() + 1);