diff --git a/.github/workflows/ci-additional.yaml b/.github/workflows/ci-additional.yaml
index 86371e055e0..827fc330ea8 100644
--- a/.github/workflows/ci-additional.yaml
+++ b/.github/workflows/ci-additional.yaml
@@ -69,7 +69,7 @@ jobs:
       run:
         shell: bash -l {0}
     env:
-      PIXI_ENV: "test-py313"
+      PIXI_ENV: "test-py315"
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
@@ -114,7 +114,7 @@ jobs:
       run:
         shell: bash -l {0}
     env:
-      PIXI_ENV: test-py314-with-typing
+      PIXI_ENV: test-py315-with-typing
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -217,7 +217,7 @@ jobs:
       run:
         shell: bash -l {0}
     env:
-      PIXI_ENV: test-py314-with-typing
+      PIXI_ENV: test-py315-with-typing
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -257,7 +257,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pixi-env: ["test-py314-with-typing", "test-py312-with-typing"]
+        pixi-env: ["test-py315-with-typing", "test-py312-with-typing"]
     if: |
       always()
       && (
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 677942ad8ee..c4e886fa2d8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -74,7 +74,7 @@ jobs:
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
         # Bookend python versions
-        pixi-env: ["test-py312", "test-py314"]
+        pixi-env: ["test-py312", "test-py314", "test-py315"]
         pytest-addopts: [""]
         include:
           # Minimum python version:
@@ -85,11 +85,11 @@ jobs:
           - pixi-env: "test-py312-min-versions"
             os: ubuntu-latest
           # Latest python version:
-          - pixi-env: "test-py314-no-numba"
+          - pixi-env: "test-py315-no-numba"
             os: ubuntu-latest
-          - pixi-env: "test-py314-no-dask"
+          - pixi-env: "test-py315-no-dask"
             os: ubuntu-latest
-          - pixi-env: "test-py314"
+          - pixi-env: "test-py315"
             pytest-addopts: "flaky"
             os: ubuntu-latest
           # The mypy tests must be executed using only 1 process in order to guarantee
@@ -98,7 +98,7 @@ jobs:
             pytest-addopts: "mypy"
             numprocesses: 1
             os: ubuntu-latest
-          - pixi-env: "test-py314-with-typing"
+          - pixi-env: "test-py315-with-typing"
             numprocesses: 1
             os: ubuntu-latest
 
diff --git a/pixi.toml b/pixi.toml
index 7e8d4ad4b4a..96dcf1f14f5 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -187,7 +187,7 @@ generate-ops-ci = { cmd = 'test -z "$(git status --porcelain)" && echo "Success!
 ] }
 
 [feature.doc.dependencies]
-python = "3.14.*"
+python = "3.15.*"
 cartopy_offlinedata = "*"          # Natural Earth data, avoids downloads (and timeouts) while executing notebooks
 kerchunk = "*"
 ipykernel = "*"
@@ -414,6 +414,9 @@ dask-core = "<0.0a0"
 [feature.nightly.dependencies]
 python = "*"
 
+[feature.py315.dependencies]
+python = "3.15.*"
+
 [environments]
 # Testing
 # test-just-xarray = { features = ["test"] } # https://github.com/pydata/xarray/pull/10888/files#r2511336147
@@ -427,8 +430,8 @@ test-py313 = { features = [
   "viz",
   "extras",
 ] }
-test-py314-no-numba = { features = [
-  "py314",
+test-py315-no-numba = { features = [
+  "py315",
   "test",
   "backends",
   "accel",
@@ -436,7 +439,7 @@ test-py314-no-numba = { features = [
   "viz",
   "extras",
 ] }
-test-py314-no-dask = { features = [
+test-py315-no-dask = { features = [
   "py314",
   "nodask",
   "test",
@@ -468,6 +471,17 @@ test-py312 = { features = [
   "extras",
 ] }
 
+test-py315 = { features = [
+  "py315",
+  "test",
+  "backends",
+  "accel",
+  "numba",
+  "dask",
+  "viz",
+  "extras",
+] }
+
 test-py312-with-typing = { features = [
   "py312",
   "test",
@@ -481,8 +495,8 @@ test-py312-with-typing = { features = [
   "typing-stubs",
 ] }
 
-test-py314-with-typing = { features = [
-  "py314",
+test-py315-with-typing = { features = [
+  "py315",
   "test",
   "backends",
   "accel",
@@ -522,7 +536,7 @@ doc = { features = [
 pre-commit = { features = ["pre-commit"], no-default-feature = true }
 release = { features = ["release"], no-default-feature = true }
 default = { features = [
-  "py313",
+  "py315",
   "test",
   "backends",
   "accel",
diff --git a/pyproject.toml b/pyproject.toml
index 98f522bd26a..f3d6a461b9c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,6 +9,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "Topic :: Scientific/Engineering",
 ]
 description = "N-D labeled arrays and datasets in Python"