diff --git a/.travis.yml b/.travis.yml
index e8cea1d..7e0de15 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,10 @@
 language: python
 python:
-    - "2.7"
-    - "3.5"
-    - "3.6"
     - "3.7"
     - "3.8"
     - "3.9"
-    - "3.9-dev"
+    - "3.10"
+    - "3.11"
     - "pypy3"
 # command to install dependencies
 install:
diff --git a/README.rst b/README.rst
index 1aec625..155313b 100644
--- a/README.rst
+++ b/README.rst
@@ -29,7 +29,7 @@ An `online BUFR decoder <http://aws-bufr-webapp.s3-website-ap-southeast-2.amazon
 
 Installation
 ------------
-PyBufrKit is compatible with Python 2.7, 3.5+, and `PyPy <https://pypy.org/>`_.
+PyBufrKit is compatible with Python 3.7+ and `PyPy <https://pypy.org/>`_.
 To install from PyPi::
 
     pip install pybufrkit
diff --git a/pybufrkit/dataquery.py b/pybufrkit/dataquery.py
index 212bce1..36b804c 100644
--- a/pybufrkit/dataquery.py
+++ b/pybufrkit/dataquery.py
@@ -310,7 +310,7 @@ def all_values(self, flat=False):
             return list(self.results.values())
 
     def __iter__(self):
-        return iter(self.results.viewitems())
+        return iter(self.results.items())
 
 
 NODE_NOT_MATCH = 0
diff --git a/setup.py b/setup.py
index 8811397..6d45248 100644
--- a/setup.py
+++ b/setup.py
@@ -44,10 +44,11 @@ def get_requirements():
         "Intended Audience :: Science/Research",
         "Operating System :: OS Independent",
         "License :: OSI Approved :: MIT License",
-        "Programming Language :: Python :: 2.7",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Topic :: Utilities",
     ],
     keywords=['BUFR', 'WMO'],
diff --git a/tests/test_dataquery.py b/tests/test_dataquery.py
index e1cb54d..44a34c8 100644
--- a/tests/test_dataquery.py
+++ b/tests/test_dataquery.py
@@ -553,3 +553,13 @@ def test_contrived(self):
                 [[[[12], [10], [8]]], [[[6], [4]]]]
             ]
         ]
+
+    def test_iterate_query_result(self):
+        s = read_bufr_file('jaso_214.bufr')
+        bufr_message = self.decoder.process(s)
+
+        r1 = self.querent.query(bufr_message, '/301011/004001')
+        it = iter(r1)
+        next(it)
+        next(it)
+        next(it)