diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 7d60645..f0d2712 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ['3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.14']
       fail-fast: true
     runs-on: ${{ matrix.os }}
 
diff --git a/nxt/nxt_node.py b/nxt/nxt_node.py
index 394b9f6..5ea9b68 100644
--- a/nxt/nxt_node.py
+++ b/nxt/nxt_node.py
@@ -40,7 +40,9 @@ class INTERNAL_ATTRS(object):
     CACHED_CODE = _prefix + 'cached_code'
     # List of python attrs that a node will have but we don't want to parse or
     # considering in our composite logic
-    BUILTINS = tuple(dir(type('NodeSpec', (object,), {})))
+    class _NodeSpec(object):
+        pass
+    BUILTINS = tuple(dir(_NodeSpec))
     # A list of node attrs that are used internally in our composite logic but
     # tracked and like user attrs with a `_source__nxt` meta attr
     TRACKED = (COMPUTE, EXECUTE_IN, COMMENT, START_POINT, ENABLED,
diff --git a/nxt/plugin_loader.py b/nxt/plugin_loader.py
index 836e8cf..18d75ad 100644
--- a/nxt/plugin_loader.py
+++ b/nxt/plugin_loader.py
@@ -20,6 +20,8 @@ def load_plugins():
         if not os.path.isdir(plugin_dir):
             continue
         for file_name in os.listdir(plugin_dir):
+            if not file_name.endswith('.py'):
+                continue
             mod_name, _ = os.path.splitext(file_name)
             if mod_name in _nxt_loaded_plugin_module_names:
                 continue
diff --git a/setup.py b/setup.py
index 71e5eb9..dd72e7d 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
     long_description_content_type="text/markdown",
     url="https://github.com/nxt-dev/nxt",
     packages=setuptools.find_packages(),
-    python_requires='>=3.7, <3.12',
+    python_requires='>=3.7, <3.15',
     entry_points={
         'console_scripts': [
             'nxt=nxt.cli:main',