diff --git a/src/poetry/core/json/schemas/project-schema.json b/src/poetry/core/json/schemas/project-schema.json
index eb9ead856..852eb1e7d 100644
--- a/src/poetry/core/json/schemas/project-schema.json
+++ b/src/poetry/core/json/schemas/project-schema.json
@@ -15,7 +15,7 @@
     "version": {
       "title": "Project version",
       "type": "string",
-      "pattern": "^v?((([0-9]+)!)?([0-9]+(\\.[0-9]+)*)([-_\\.]?(alpha|a|beta|b|preview|pre|c|rc)[-_\\.]?([0-9]+)?)?((-([0-9]+))|([-_\\.]?(post|rev|r)[-_\\.]?([0-9]+)?))?([-_\\.]?(dev)[-_\\.]?([0-9]+)?)?)(\\+([a-z0-9]+([-_\\.][a-z0-9]+)*))?$",
+      "pattern": "^v?((([0-9]+)!)?([0-9]+(\\.[0-9]+)*)([-_\\.]?(alpha|a|beta|b|preview|pre|c|rc)[-_\\.]?([0-9]+)?)?((-([0-9]+))|([-_\\.]?(post|rev|r)[-_\\.]?([0-9]+)?))?([-_\\.]?(dev)[-_\\.]?([0-9]+)?)?)(\\+([a-zA-Z0-9]+([-_\\.][a-zA-Z0-9]+)*))?$",
       "examples": [
         "42.0.1",
         "0.3.9rc7.post0.dev5"
diff --git a/tests/test_factory.py b/tests/test_factory.py
index 88492a099..c52f02892 100644
--- a/tests/test_factory.py
+++ b/tests/test_factory.py
@@ -633,6 +633,18 @@ def test_validate_strict_dynamic_warnings() -> None:
     }
 
 
+def test_validate_local_version(tmp_path: Path) -> None:
+    project = tmp_path / "local_version.toml"
+    project.write_text(
+        """[project]\nname = "local-version"\nversion = "0.5.0+LOCAL.123A"\n""",
+        encoding="utf-8",
+    )
+    with project.open("rb") as f:
+        content = tomllib.load(f)
+
+    assert Factory.validate(content) == {"errors": [], "warnings": []}
+
+
 def test_validate_fails() -> None:
     complete = fixtures_dir / "complete.toml"
     with complete.open("rb") as f: