diff --git a/setup.cfg b/setup.cfg
index 0fca10f..afe6da1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,12 +37,12 @@ packages =
 python_requires = >=3.6
 install_requires = 
 	pkginfo >= 1.8.1
-	readme_renderer >= 21.0
+	readme-renderer >= 21.0
 	requests >= 2.20
 	requests-toolbelt >= 0.8.0, != 0.9.0
 	urllib3 >= 1.26.0
 	tqdm >= 4.14
-	importlib_metadata >= 3.6
+	importlib-metadata >= 3.6
 	keyring >= 15.1
 	rfc3986 >= 1.4.0
 	colorama >= 0.4.3
diff --git a/tests/test_repository.py b/tests/test_repository.py
index 0c0098c..a035ffc 100644
--- a/tests/test_repository.py
+++ b/tests/test_repository.py
@@ -85,18 +85,8 @@ def test_set_certificate_authority(default_repo):
 
 
 def test_make_user_agent_string(default_repo):
-    """Add twine and its dependencies to User-Agent session header."""
-    assert "User-Agent" in default_repo.session.headers
-
-    user_agent = default_repo.session.headers["User-Agent"]
-    packages = (
-        "twine/",
-        "requests/",
-        "requests-toolbelt/",
-        "pkginfo/",
-        "importlib_metadata/",
-    )
-    assert all(p in user_agent for p in packages)
+    """Add twine to User-Agent session header."""
+    assert "twine/" in default_repo.session.headers["User-Agent"]
 
 
 def response_with(**kwattrs):
diff --git a/twine/cli.py b/twine/cli.py
index f65bc03..d5f0276 100644
--- a/twine/cli.py
+++ b/twine/cli.py
@@ -15,7 +15,6 @@ import argparse
 from typing import Any, List, Tuple
 
 import importlib_metadata
-from packaging import requirements
 
 import twine
 
@@ -23,8 +22,14 @@ args = argparse.Namespace()
 
 
 def list_dependencies_and_versions() -> List[Tuple[str, str]]:
-    requires = importlib_metadata.requires("twine")  # type: ignore[no-untyped-call] # python/importlib_metadata#288  # noqa: E501
-    deps = [requirements.Requirement(r).name for r in requires]
+    deps = (
+        "importlib-metadata",
+        "keyring",
+        "pkginfo",
+        "requests",
+        "requests-toolbelt",
+        "urllib3",
+    )
     return [(dep, importlib_metadata.version(dep)) for dep in deps]  # type: ignore[no-untyped-call] # python/importlib_metadata#288  # noqa: E501
 
 
diff --git a/twine/repository.py b/twine/repository.py
index 087a2f3..bca21d9 100644
--- a/twine/repository.py
+++ b/twine/repository.py
@@ -88,12 +88,8 @@ class Repository:
 
     @staticmethod
     def _make_user_agent_string() -> str:
-        from twine import cli
-
-        dependencies = cli.list_dependencies_and_versions()
         user_agent_string = (
             user_agent.UserAgentBuilder("twine", twine.__version__)
-            .include_extras(dependencies)
             .include_implementation()
             .build()
         )