diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ee73869..0d0033e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.7, 3.8, 3.9, '3.10', '3.11', '3.12', 'pypy-3.9']
+        python-version: [3.8, 3.9, '3.10', '3.11', '3.12', 'pypy-3.9']
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
diff --git a/LICENSE.rst b/LICENSE.rst
index ceb7152..f38a047 100644
--- a/LICENSE.rst
+++ b/LICENSE.rst
@@ -1,4 +1,4 @@
-Copyright (c) 2016-2023 Renata Hodovan, Akos Kiss.
+Copyright (c) 2016-2024 Renata Hodovan, Akos Kiss.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/README.rst b/README.rst
index d7f215f..7c666bc 100644
--- a/README.rst
+++ b/README.rst
@@ -38,7 +38,7 @@ test is **1-minimal**).
 Requirements
 ============
 
-* Python_ >= 3.7
+* Python_ >= 3.8
 
 .. _Python: https://www.python.org
 
diff --git a/picire/iterator.py b/picire/iterator.py
index 445658c..4029f40 100644
--- a/picire/iterator.py
+++ b/picire/iterator.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2016-2023 Renata Hodovan, Akos Kiss.
+# Copyright (c) 2016-2024 Renata Hodovan, Akos Kiss.
 #
 # Licensed under the BSD 3-Clause License
 # <LICENSE.rst or https://opensource.org/licenses/BSD-3-Clause>.
@@ -90,15 +90,13 @@ def __call__(self, n):
             i=-1..-n to remove subset -i-1).
         """
         if self._subset_first:
-            for i in self._subset_iterator(n):
-                yield i
+            yield from self._subset_iterator(n)
             for i in self._complement_iterator(n):
                 yield -i - 1
         else:
             for i in self._complement_iterator(n):
                 yield -i - 1
-            for i in self._subset_iterator(n):
-                yield i
+            yield from self._subset_iterator(n)
 
     def __str__(self):
         def _str(a):
diff --git a/setup.cfg b/setup.cfg
index 3d5f7ce..7cd1944 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -14,7 +14,6 @@ classifiers =
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
@@ -25,10 +24,9 @@ platform = any
 
 [options]
 packages = find:
-python_requires = >=3.7
+python_requires = >=3.8
 install_requires =
     chardet
-    importlib-metadata; python_version < "3.8"
     inators
 
 [options.entry_points]