diff --git a/src/poetry/core/packages/package.py b/src/poetry/core/packages/package.py
index 3a76fdf59..ddd63564a 100644
--- a/src/poetry/core/packages/package.py
+++ b/src/poetry/core/packages/package.py
@@ -53,6 +53,7 @@ class Package(PackageSpecification):
         "3.9",
         "3.10",
         "3.11",
+        "3.12",
     }
 
     def __init__(
diff --git a/src/poetry/core/version/helpers.py b/src/poetry/core/version/helpers.py
index f7f5bddba..4f6780f85 100644
--- a/src/poetry/core/version/helpers.py
+++ b/src/poetry/core/version/helpers.py
@@ -24,6 +24,7 @@
     "3.9.*",
     "3.10.*",
     "3.11.*",
+    "3.12.*",
 ]
 
 
diff --git a/tests/masonry/builders/test_builder.py b/tests/masonry/builders/test_builder.py
index f74b9d4e6..80e68ed3f 100644
--- a/tests/masonry/builders/test_builder.py
+++ b/tests/masonry/builders/test_builder.py
@@ -102,6 +102,7 @@ def test_get_metadata_content() -> None:
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "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 940ac7d4b..44cbfbd72 100644
--- a/tests/masonry/builders/test_complete.py
+++ b/tests/masonry/builders/test_complete.py
@@ -186,6 +186,7 @@ def test_complete(no_vcs: bool) -> None:
 Classifier: Programming Language :: Python :: 3.9
 Classifier: Programming Language :: Python :: 3.10
 Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: 3.12
 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 340e41444..8c0c00954 100644
--- a/tests/masonry/test_api.py
+++ b/tests/masonry/test_api.py
@@ -167,6 +167,7 @@ def test_prepare_metadata_for_build_wheel() -> None:
 Classifier: Programming Language :: Python :: 3.9
 Classifier: Programming Language :: Python :: 3.10
 Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: 3.12
 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 43f3c86aa..7f2862006 100644
--- a/tests/test_factory.py
+++ b/tests/test_factory.py
@@ -148,6 +148,7 @@ def test_create_poetry() -> None:
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Topic :: Software Development :: Build Tools",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ]
@@ -492,5 +493,6 @@ def test_all_classifiers_unique_even_if_classifiers_is_duplicated() -> None:
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Topic :: Software Development :: Build Tools",
     ]