diff --git a/src/poetry/core/packages/package.py b/src/poetry/core/packages/package.py
index 70ac3a91c..71884ca72 100644
--- a/src/poetry/core/packages/package.py
+++ b/src/poetry/core/packages/package.py
@@ -51,6 +51,7 @@ class Package(PackageSpecification):
         "3.11",
         "3.12",
         "3.13",
+        "3.14",
     }
 
     def __init__(
diff --git a/src/poetry/core/version/helpers.py b/src/poetry/core/version/helpers.py
index 09b3ccefb..006105909 100644
--- a/src/poetry/core/version/helpers.py
+++ b/src/poetry/core/version/helpers.py
@@ -26,6 +26,7 @@
     "3.11.*",
     "3.12.*",
     "3.13.*",
+    "3.14.*",
 ]
 
 
diff --git a/tests/masonry/builders/test_builder.py b/tests/masonry/builders/test_builder.py
index e290386ca..10d75ac41 100644
--- a/tests/masonry/builders/test_builder.py
+++ b/tests/masonry/builders/test_builder.py
@@ -147,6 +147,7 @@ def test_get_metadata_content(project: str) -> None:
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Topic :: Software Development :: Build Tools",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ]
diff --git a/tests/masonry/builders/test_complete.py b/tests/masonry/builders/test_complete.py
index 2544ee4eb..cd7fd5dcc 100644
--- a/tests/masonry/builders/test_complete.py
+++ b/tests/masonry/builders/test_complete.py
@@ -206,6 +206,7 @@ def test_complete(project: str, no_vcs: bool) -> None:
 Classifier: Programming Language :: Python :: 3.11
 Classifier: Programming Language :: Python :: 3.12
 Classifier: Programming Language :: Python :: 3.13
+Classifier: Programming Language :: Python :: 3.14
 Classifier: Topic :: Software Development :: Build Tools
 Classifier: Topic :: Software Development :: Libraries :: Python Modules
 Provides-Extra: time
diff --git a/tests/masonry/test_api.py b/tests/masonry/test_api.py
index f04393e80..fc42fc808 100644
--- a/tests/masonry/test_api.py
+++ b/tests/masonry/test_api.py
@@ -201,6 +201,7 @@ def test_prepare_metadata_for_build_wheel(project: str) -> None:
 Classifier: Programming Language :: Python :: 3.11
 Classifier: Programming Language :: Python :: 3.12
 Classifier: Programming Language :: Python :: 3.13
+Classifier: Programming Language :: Python :: 3.14
 Classifier: Topic :: Software Development :: Build Tools
 Classifier: Topic :: Software Development :: Libraries :: Python Modules
 Provides-Extra: time
@@ -286,6 +287,7 @@ def test_prepare_metadata_for_build_wheel_with_local_version() -> None:
 Classifier: Programming Language :: Python :: 3.11
 Classifier: Programming Language :: Python :: 3.12
 Classifier: Programming Language :: Python :: 3.13
+Classifier: Programming Language :: Python :: 3.14
 Classifier: Topic :: Software Development :: Build Tools
 Classifier: Topic :: Software Development :: Libraries :: Python Modules
 Provides-Extra: time
diff --git a/tests/test_factory.py b/tests/test_factory.py
index 2f3ac3b1f..e1d905464 100644
--- a/tests/test_factory.py
+++ b/tests/test_factory.py
@@ -307,6 +307,7 @@ def test_create_poetry(project: str) -> None:
             "Programming Language :: Python :: 3.11",
             "Programming Language :: Python :: 3.12",
             "Programming Language :: Python :: 3.13",
+            "Programming Language :: Python :: 3.14",
             "Topic :: Software Development :: Build Tools",
             "Topic :: Software Development :: Libraries :: Python Modules",
         ]
@@ -1285,6 +1286,7 @@ def test_all_classifiers_unique_even_if_classifiers_is_duplicated() -> None:
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Topic :: Software Development :: Build Tools",
     ]