brosaplanella · Nov 3, 2026 · Nov 3, 2026
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -35,11 +35,11 @@ jobs:
         # (Apple silicon) and Windows run the oldest and newest, where platform problems
         # show; coverage, notebooks and PyBaMM main run on Linux only
         os: [ubuntu-latest]
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
+        python-version: ["3.11", "3.12", "3.13", "3.14", "3.15"]
         include:
-          - {os: macos-latest, python-version: "3.10"}
+          - {os: macos-latest, python-version: "3.11"}
           - {os: macos-latest, python-version: "3.15"}
-          - {os: windows-latest, python-version: "3.10"}
+          - {os: windows-latest, python-version: "3.11"}
           - {os: windows-latest, python-version: "3.15"}
     steps:
       - uses: actions/checkout@v7

diff --git a/README.md b/README.md
@@ -35,7 +35,7 @@ pip install --pre "pytes-thermal[plot]"    # plus the standard plots (matplotlib
 The package is `pytes-thermal` on PyPI and is imported as `pytes`. `--pre` is needed while
 PyTES only has alpha releases.
 
-PyTES supports every Python version PyBaMM supports (3.10 to 3.15).
+PyTES supports every Python version PyBaMM supports (3.11 to 3.15).
 
 ## 🚀 Quick start
 

diff --git a/changelog.d/59.breaking.md b/changelog.d/59.breaking.md
@@ -0,0 +1 @@
+Python 3.10 is no longer supported: PyTES now needs Python 3.11 or newer, ahead of PyBaMM dropping 3.10.
diff --git a/docs/design/DESIGN.md b/docs/design/DESIGN.md
@@ -540,8 +540,9 @@ chosen to stay readable with colour-vision deficiency:
     uses them where available, without raising the floor, and falls back on older PyBaMM.
     For example, the plot-style hook (#43): an entry point that an older PyBaMM does not
     read does nothing, so older releases keep the opt-in styles.
-- Support every Python version PyBaMM supports (maintainer, 2026-10-16; today 3.10 to
-  3.15), tested in CI, all blocking. Platforms (maintainer, 2026-10-17): Linux is the
+- Support every Python version PyBaMM supports (maintainer, 2026-10-16; today 3.11 to
+  3.15), tested in CI, all blocking. A version PyBaMM is about to drop may be dropped
+  first, in the next PyTES release (maintainer, 2026-11-03: Python 3.10, issue #58). Platforms (maintainer, 2026-10-17): Linux is the
   reference, with every Python version, coverage, notebooks and PyBaMM `main`; macOS and
   Windows run the tests on the oldest and newest Python version. A version whose dependencies do not install yet runs
   non-blocking until they do (3.15 did, until `pybammsolvers` 0.11.1 shipped its wheels).

diff --git a/pyproject.toml b/pyproject.toml
@@ -9,7 +9,7 @@ description = "Models and tools for heat batteries (thermal energy storage), bui
 readme = "README.md"
 license = "BSD-3-Clause"
 # The Python versions PyBaMM supports (CLAUDE.md: test them all)
-requires-python = ">=3.10,<3.16"
+requires-python = ">=3.11,<3.16"
 dependencies = [
   # 26.9 added pybamm.tree_map and pybamm.rebuild (used by pytes.compat.coupled)
   "pybamm>=26.9",
@@ -22,7 +22,6 @@ classifiers = [
   "Development Status :: 3 - Alpha",
   "Intended Audience :: Science/Research",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Python 3.10 is no longer supported: PyTES now needs Python 3.11 or newer, ahead of PyBaMM dropping 3.10.