diff --git a/src/poetry/core/utils/helpers.py b/src/poetry/core/utils/helpers.py
index 50e5a223c..68bf4f37a 100644
--- a/src/poetry/core/utils/helpers.py
+++ b/src/poetry/core/utils/helpers.py
@@ -33,7 +33,7 @@ def module_name(name: str) -> str:
 
 
 def normalize_version(version: str) -> str:
-    return PEP440Version.parse(version).to_string(short=True)
+    return PEP440Version.parse(version).norm_string
 
 
 @contextmanager
diff --git a/src/poetry/core/version/pep440/segments.py b/src/poetry/core/version/pep440/segments.py
index 7586026e2..9cb3513fc 100644
--- a/src/poetry/core/version/pep440/segments.py
+++ b/src/poetry/core/version/pep440/segments.py
@@ -23,6 +23,15 @@
     RELEASE_PHASE_REV: "r",
     RELEASE_PHASE_DEV: "dev",
 }
+RELEASE_PHASES_NORMALIZED = {
+    RELEASE_PHASE_ALPHA: "a",
+    RELEASE_PHASE_BETA: "b",
+    RELEASE_PHASE_RC: "rc",
+    RELEASE_PHASE_PREVIEW: "pre",
+    RELEASE_PHASE_POST: "post",
+    RELEASE_PHASE_REV: "post",
+    RELEASE_PHASE_DEV: "dev",
+}
 RELEASE_PHASES_SHORT = {v: k for k, v in RELEASE_PHASES.items() if k != "post"}
 
 
@@ -111,6 +120,11 @@ class ReleaseTag:
     def __post_init__(self) -> None:
         object.__setattr__(self, "phase", self.expand(self.phase))
 
+    @property
+    def norm_string(self) -> str:
+        normalized_phase = RELEASE_PHASES_NORMALIZED.get(self.phase, self.phase)
+        return f"{normalized_phase}{self.number}"
+
     @classmethod
     def shorten(cls, phase: str) -> str:
         return RELEASE_PHASES.get(phase, phase)
diff --git a/src/poetry/core/version/pep440/version.py b/src/poetry/core/version/pep440/version.py
index b5a337d7e..80f3efbea 100644
--- a/src/poetry/core/version/pep440/version.py
+++ b/src/poetry/core/version/pep440/version.py
@@ -142,6 +142,29 @@ def non_semver_parts(self) -> tuple[int, ...]:
         assert isinstance(self.release.extra, tuple)
         return self.release.extra
 
+    @property
+    def norm_string(self) -> str:
+        version_string = self.release.to_string()
+
+        if self.epoch:
+            # if epoch is non-zero we should include it
+            version_string = f"{self.epoch}!{version_string}"
+
+        if self.pre:
+            version_string += self.pre.norm_string
+
+        if self.post:
+            version_string = f"{version_string}.{self.post.norm_string}"
+
+        if self.dev:
+            version_string = f"{version_string}.{self.dev.norm_string}"
+
+        if self.local:
+            assert isinstance(self.local, tuple)
+            version_string += "+" + ".".join(map(str, self.local))
+
+        return version_string.lower()
+
     def to_string(self, short: bool = False) -> str:
         dash = "-" if not short else ""
 
diff --git a/tests/utils/test_helpers.py b/tests/utils/test_helpers.py
index e61c2dbbe..c094400be 100644
--- a/tests/utils/test_helpers.py
+++ b/tests/utils/test_helpers.py
@@ -9,11 +9,80 @@
 
 from poetry.core.utils.helpers import canonicalize_name
 from poetry.core.utils.helpers import combine_unicode
+from poetry.core.utils.helpers import normalize_version
 from poetry.core.utils.helpers import parse_requires
 from poetry.core.utils.helpers import readme_content_type
 from poetry.core.utils.helpers import temporary_directory
 
 
+@pytest.mark.parametrize(
+    "version,normalized_version",
+    [
+        (  # already normalized version
+            "1!2.3.4.5.6a7.post8.dev9+local1.123.abc",
+            "1!2.3.4.5.6a7.post8.dev9+local1.123.abc",
+        ),
+        # PEP 440 Normalization
+        # Case sensitivity
+        ("1.1RC1", "1.1rc1"),
+        # Integer Normalization
+        ("00", "0"),
+        ("09000", "9000"),
+        ("1.0+foo0100", "1.0+foo0100"),
+        # Pre-release separators
+        ("1.1.a1", "1.1a1"),
+        ("1.1-a1", "1.1a1"),
+        ("1.1_a1", "1.1a1"),
+        ("1.1a.1", "1.1a1"),
+        ("1.1a-1", "1.1a1"),
+        ("1.1a_1", "1.1a1"),
+        # Pre-release spelling
+        ("1.1alpha1", "1.1a1"),
+        ("1.1beta2", "1.1b2"),
+        ("1.1c3", "1.1rc3"),
+        # Implicit pre-release number
+        ("1.2a", "1.2a0"),
+        # Post release separators
+        ("1.2.post2", "1.2.post2"),
+        ("1.2-post2", "1.2.post2"),
+        ("1.2_post2", "1.2.post2"),
+        ("1.2post.2", "1.2.post2"),
+        ("1.2post-2", "1.2.post2"),
+        ("1.2post_2", "1.2.post2"),
+        # Post release spelling
+        ("1.0-r4", "1.0.post4"),
+        ("1.0-rev4", "1.0.post4"),
+        # Implicit post release number
+        ("1.2.post", "1.2.post0"),
+        # Implicit post releases
+        ("1.0-1", "1.0.post1"),
+        # Development release separators
+        ("1.2.dev2", "1.2.dev2"),
+        ("1.2-dev2", "1.2.dev2"),
+        ("1.2_dev2", "1.2.dev2"),
+        ("1.2dev.2", "1.2.dev2"),
+        ("1.2dev-2", "1.2.dev2"),
+        ("1.2dev_2", "1.2.dev2"),
+        # Implicit development release number
+        ("1.2.dev", "1.2.dev0"),
+        # Local version segments
+        ("1.0+ubuntu-1", "1.0+ubuntu.1"),
+        ("1.0+ubuntu_1", "1.0+ubuntu.1"),
+        # Preceding v character
+        ("v1.0", "1.0"),
+        # Leading and Trailing Whitespace
+        (" 1.0 ", "1.0"),
+        ("\t1.0\t", "1.0"),
+        ("\n1.0\n", "1.0"),
+        ("\r\n1.0\r\n", "1.0"),
+        ("\f1.0\f", "1.0"),
+        ("\v1.0\v", "1.0"),
+    ],
+)
+def test_normalize_version(version: str, normalized_version: str) -> None:
+    assert normalize_version(version) == normalized_version
+
+
 def test_parse_requires() -> None:
     requires = """\
 jsonschema>=2.6.0.0,<3.0.0.0