diff --git a/functional/test/test_functional.py b/functional/test/test_functional.py
index 732f6e6..646c844 100644
--- a/functional/test/test_functional.py
+++ b/functional/test/test_functional.py
@@ -964,7 +964,7 @@ class A(object):
     def test_wrap_pandas(self):
         df1 = pandas.DataFrame({"name": ["name1", "name2"], "value": [1, 2]})
         df2 = pandas.DataFrame({"name": ["name1", "name2"], "value": [3, 4]})
-        result = seq([df1, df2]).reduce(lambda x, y: x.append(y))
+        result = seq([df1, df2]).reduce(lambda x, y: pandas.concat([x, y]))
         self.assertEqual(result.len(), 4)
         self.assertEqual(result[0].to_list(), ["name1", 1])
         self.assertEqual(result[1].to_list(), ["name2", 2])
diff --git a/poetry.lock b/poetry.lock
index 6a7c934..78f351d 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
 
 [[package]]
 name = "astroid"
@@ -792,4 +792,4 @@ all = ["pandas"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8.0"
-content-hash = "df9321536c517f64571916d7ede61c1d058a8e52d53c3f9b34f2d07b6222383d"
+content-hash = "651ca0c3035b31fc6d501f825f69de017d8d69c6b39d154f4742d17923f9d4ba"
diff --git a/pyproject.toml b/pyproject.toml
index ff3471e..8c0b117 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ packages = [{ include = "functional" }]
 python = "^3.8.0"
 dill = ">=0.2.5"
 tabulate = "<=1.0.0"
-pandas = { version = "^1.0.3", optional = true }
+pandas = { version = ">=1.0.3", optional = true }
 
 [tool.poetry.extras]
 all = ["pandas"]