diff --git a/tests/test_items.py b/tests/test_items.py
index 3dcd509..aad33b4 100644
--- a/tests/test_items.py
+++ b/tests/test_items.py
@@ -562,6 +562,13 @@ def test_item_array_of_dicts_converted_to_aot():
     )
 
 
+def test_add_sum_int_with_float():
+    content = "[table]\nmy_int = 2048.3"
+    doc = parse(content)
+    doc["table"]["my_int"] += 5
+    assert doc["table"]["my_int"] == 2053.3
+
+
 def test_integers_behave_like_ints():
     i = item(34)
 
diff --git a/tomlkit/items.py b/tomlkit/items.py
index c956407..8c6889c 100644
--- a/tomlkit/items.py
+++ b/tomlkit/items.py
@@ -637,9 +637,8 @@ def as_string(self) -> str:
         return self._raw
 
     def __add__(self, other):
-        result = super().__add__(other)
 
-        return self._new(result)
+        return self._new(int(self._raw) + other)
 
     def __radd__(self, other):
         result = super().__radd__(other)
@@ -664,7 +663,6 @@ def __rsub__(self, other):
 
     def _new(self, result):
         raw = str(result)
-
         if self._sign:
             sign = "+" if result >= 0 else "-"
             raw = sign + raw