diff --git a/news/dependency.rst b/news/dependency.rst
new file mode 100644
index 0000000..a32bd6e
--- /dev/null
+++ b/news/dependency.rst
@@ -0,0 +1,23 @@
+**Added:**
+
+* No news added: Remove `diffpy.cmi` from `pip.txt` and set `python=3.11,3.12,3.13` in `pyproject.toml`
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>
diff --git a/pyproject.toml b/pyproject.toml
index ce67605..c829688 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ maintainers = [
 description = "Automated sequential refinements of PDF data"
 keywords = ['diffraction', 'PDF', 'X-ray', 'neutron', 'nsls-ii']
 readme = "README.rst"
-requires-python = ">=3.12, <3.15"
+requires-python = ">=3.11, <3.14"
 classifiers = [
         'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
@@ -25,6 +25,7 @@ classifiers = [
         'Operating System :: Microsoft :: Windows',
         'Operating System :: POSIX',
         'Operating System :: Unix',
+        'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
         'Programming Language :: Python :: 3.13',
         'Topic :: Scientific/Engineering :: Physics',
diff --git a/requirements/pip.txt b/requirements/pip.txt
index 4859cb4..24ce15a 100644
--- a/requirements/pip.txt
+++ b/requirements/pip.txt
@@ -1,2 +1 @@
 numpy
-diffpy.cmi