diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 494cf3f9..2c84a0fe 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -29,6 +29,10 @@ jobs:
           - python-version: '3.12'
           - python-version: '3.13'
           - python-version: '3.14'  # To actually run the default config
+          # cvxpy is excluded on Python 3.15 because one of its dependencies (sparsediffpy<0.7) has no
+          # cp315 wheel and can't be built without BLAS.
+          - python-version: '3.15'
+            options: 'quadprog_projector fairgrad'
           # OS variations
           - os: macOS-latest
           - os: windows-latest
@@ -46,11 +50,6 @@ jobs:
             extra_groups: 'lower_bounds'
           # Latest: torch nightly build.
           - torch_channel: 'nightly'
-          # Upcoming Python version, not yet supported by stable torch. cvxpy is excluded because one
-          # of its dependencies (sparsediffpy) has no wheel yet and can't be built without BLAS.
-          - python-version: '3.15'
-            torch_channel: 'nightly'
-            options: 'quadprog_projector fairgrad'
 
     steps:
       - name: Checkout repository
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d04177a3..6dc43d56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ changelog does not include internal changes that do not affect the user.
 
 ## [Unreleased]
 
+### Added
+
+- Added Python 3.15 classifier in pyproject.toml (we now also run tests on Python 3.15 in the CI).
+
 ### Fixed
 
 - Fixed `Krum` and `KrumWeighting` ranking rows by sums of Euclidean distances instead of
diff --git a/docs/source/installation.md b/docs/source/installation.md
index 5915e085..b90e95e7 100644
--- a/docs/source/installation.md
+++ b/docs/source/installation.md
@@ -5,7 +5,7 @@
 :end-before: <!-- end installation -->
 ```
 
-Note that `torchjd` requires Python 3.10, 3.11, 3.12, 3.13 or 3.14 and `torch>=2.0`.
+Note that `torchjd` requires Python 3.10, 3.11, 3.12, 3.13, 3.14 or 3.15 and `torch>=2.0`.
 
 Some aggregators have additional dependencies that are not included by default when installing
 `torchjd`. The following table lists the optional dependency groups and the aggregators they enable:
diff --git a/pyproject.toml b/pyproject.toml
index 49eb5a9a..3cebde3e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Artificial Intelligence",
 ]