diff --git a/src/poetry/publishing/uploader.py b/src/poetry/publishing/uploader.py
index 65163e1bd9d..7b1e8e19048 100644
--- a/src/poetry/publishing/uploader.py
+++ b/src/poetry/publishing/uploader.py
@@ -10,7 +10,7 @@
 import requests
 
 from poetry.core.masonry.metadata import Metadata
-from poetry.core.masonry.utils.helpers import escape_name
+from poetry.core.masonry.utils.helpers import distribution_name
 from requests import adapters
 from requests.exceptions import ConnectionError
 from requests.exceptions import HTTPError
@@ -77,11 +77,10 @@ def adapter(self) -> adapters.HTTPAdapter:
     def files(self) -> list[Path]:
         dist = self._poetry.file.parent / "dist"
         version = self._package.version.to_string()
+        escaped_name = distribution_name(self._package.name)
 
-        wheels = list(
-            dist.glob(f"{escape_name(self._package.pretty_name)}-{version}-*.whl")
-        )
-        tars = list(dist.glob(f"{self._package.pretty_name}-{version}.tar.gz"))
+        wheels = list(dist.glob(f"{escaped_name}-{version}-*.whl"))
+        tars = list(dist.glob(f"{escaped_name}-{version}.tar.gz"))
 
         return sorted(wheels + tars)
 
@@ -301,7 +300,8 @@ def _register(self, session: requests.Session, url: str) -> requests.Response:
         Register a package to a repository.
         """
         dist = self._poetry.file.parent / "dist"
-        file = dist / f"{self._package.name}-{self._package.version.to_string()}.tar.gz"
+        escaped_name = distribution_name(self._package.name)
+        file = dist / f"{escaped_name}-{self._package.version.to_string()}.tar.gz"
 
         if not file.exists():
             raise RuntimeError(f'"{file.name}" does not exist.')
diff --git a/tests/console/commands/test_publish.py b/tests/console/commands/test_publish.py
index 559f58f323f..f4241a1a870 100644
--- a/tests/console/commands/test_publish.py
+++ b/tests/console/commands/test_publish.py
@@ -107,7 +107,7 @@ def test_publish_dry_run_skip_existing(
     error = app_tester.io.fetch_error()
 
     assert "Publishing simple-project (1.2.3) to PyPI" in output
-    assert "- Uploading simple-project-1.2.3.tar.gz" in error
+    assert "- Uploading simple_project-1.2.3.tar.gz" in error
     assert "- Uploading simple_project-1.2.3-py2.py3-none-any.whl" in error
 
 
@@ -125,4 +125,4 @@ def test_skip_existing_output(
     assert exit_code == 0
 
     error = app_tester.io.fetch_error()
-    assert "- Uploading simple-project-1.2.3.tar.gz File exists. Skipping" in error
+    assert "- Uploading simple_project-1.2.3.tar.gz File exists. Skipping" in error
diff --git a/tests/fixtures/simple_project/dist/simple-project-1.2.3.tar.gz b/tests/fixtures/simple_project/dist/simple_project-1.2.3.tar.gz
similarity index 100%
rename from tests/fixtures/simple_project/dist/simple-project-1.2.3.tar.gz
rename to tests/fixtures/simple_project/dist/simple_project-1.2.3.tar.gz