diff --git a/.github/workflows/build-artifacts.yml b/.github/workflows/build-artifacts.yml
index 1f28825a8..bf04205a8 100644
--- a/.github/workflows/build-artifacts.yml
+++ b/.github/workflows/build-artifacts.yml
@@ -64,7 +64,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/.tox.justfile b/.tox.justfile
index f7db5d823..102789f34 100644
--- a/.tox.justfile
+++ b/.tox.justfile
@@ -1,5 +1,5 @@
 # Keep in sync with pyproject.toml and .github/workflows/build-artifacts.yml
-supported_python_versions := '3.10,3.11,3.12,3.13,3.14'
+supported_python_versions := '3.10,3.11,3.12,3.13,3.14,3.15'
 
 install_tox_msg := '''
     tox is not installed; to install it using uv:
@@ -7,11 +7,11 @@ install_tox_msg := '''
 '''
 
 python_version_msg := '''
-    .python-version does not exist; to create (replace 3.14 with the desired version):
+    .python-version does not exist; to create (replace 3.15 with the desired version):
         * using uv:
-            uv python pin 3.14
+            uv python pin 3.15
         * if uv is not used:
-            echo 3.14 > .python-version
+            echo 3.15 > .python-version
 '''
 
 [doc('''
diff --git a/src/dstack/_internal/core/models/configurations.py b/src/dstack/_internal/core/models/configurations.py
index ba7c62af0..6cf8e423f 100644
--- a/src/dstack/_internal/core/models/configurations.py
+++ b/src/dstack/_internal/core/models/configurations.py
@@ -93,6 +93,7 @@ class PythonVersion(str, Enum):
     PY312 = "3.12"
     PY313 = "3.13"
     PY314 = "3.14"
+    PY315 = "3.15"
 
 
 class PortMapping(CoreModel):