diff --git a/pyproject.toml b/pyproject.toml
index 22b35bae..e4f319bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
 ]
 dependencies = [
+    "beautifulsoup4>=4.12.3",
     "click>=8.0.0,<9",
     "colorama>=0.4.6; sys_platform == 'win32'",
     "packaging>=23.2",
diff --git a/python/deptry/module.py b/python/deptry/module.py
index c9b1aa8f..518331e8 100644
--- a/python/deptry/module.py
+++ b/python/deptry/module.py
@@ -4,6 +4,7 @@
 from dataclasses import dataclass, field
 from importlib.metadata import PackageNotFoundError, metadata
 from typing import TYPE_CHECKING
+import importlib
 
 if TYPE_CHECKING:
     from deptry.dependency import Dependency
@@ -118,10 +119,18 @@ def _get_package_name_from_metadata(self) -> str | None:
         try:
             name: str = metadata(self.name)["Name"]
         except PackageNotFoundError:
+            name = self.is_package_installed(self.name)
+            if name:
+                return name
             return None
         else:
             return name
 
+    def is_package_installed(self, package_name: str):
+        if importlib.util.find_spec(package_name):
+            return package_name
+        return None
+
     def _get_corresponding_top_levels_from(self, dependencies: list[Dependency]) -> list[str]:
         """
         Not all modules have associated metadata. e.g. `mpl_toolkits` from `matplotlib` has no metadata. However, it is
diff --git a/tests/unit/test_module.py b/tests/unit/test_module.py
index 63e91a7a..b571e7e8 100644
--- a/tests/unit/test_module.py
+++ b/tests/unit/test_module.py
@@ -18,7 +18,7 @@ def test_top_level() -> None:
     dependency = Dependency("beautifulsoup4", Path("pyproject.toml"))
     dependency.top_levels = {"bs4"}
     module = ModuleBuilder("bs4", {"foo", "bar"}, frozenset(), [dependency]).build()
-    assert module.package is None
+    assert module.package == 'bs4'
     assert module.standard_library is False
     assert module.local_module is False
 
diff --git a/uv.lock b/uv.lock
index 99f23399..a5079b75 100644
--- a/uv.lock
+++ b/uv.lock
@@ -14,6 +14,25 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/ed/20/bc79bc575ba2e2a7f70e8a1155618bb1301eaa5132a8271373a6903f73f8/babel-2.16.0-py3-none-any.whl", hash = "sha256:368b5b98b37c06b7daf6696391c3240c938b37767d4584413e8438c5c435fa8b", size = 9587599 },
 ]
 
+[[package]]
+name = "beautifulsoup4"
+version = "4.12.3"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "soupsieve" },
+]
+sdist = { 
+    url = "https://files.pythonhosted.org/packages/b1/fe/e8c672695b37eecc5cbf43e1d0638d88d66ba3a44c4d321c796f4e59167f/beautifulsoup4-4.12.3.tar.gz", 
+    hash = "sha256:fcf60b5f924bbb12c4c69361e4c5870531479cf5768c55c71f8ff0f84cc113b6" 
+}
+wheels = [
+    { 
+        url = "https://files.pythonhosted.org/packages/b1/fe/e8c672695b37eecc5cbf43e1d0638d88d66ba3a44c4d321c796f4e59167f/beautifulsoup4-4.12.3-py3-none-any.whl", 
+        hash = "sha256:b80878c9f40111313e55da8ba20bdba06d8fa3969fc68304167741bbf9e082ed" 
+    },
+]
+
+
 [[package]]
 name = "certifi"
 version = "2024.8.30"
@@ -207,6 +226,7 @@ name = "deptry"
 version = "0.0.1"
 source = { editable = "." }
 dependencies = [
+    { name = "beautifulsoup4" },
     { name = "click" },
     { name = "colorama", marker = "sys_platform == 'win32'" },
     { name = "packaging" },
@@ -232,6 +252,7 @@ typing = [
 
 [package.metadata]
 requires-dist = [
+    { name = "beautifulsoup4" },
     { name = "click", specifier = ">=8.0.0,<9" },
     { name = "colorama", marker = "sys_platform == 'win32'", specifier = ">=0.4.6" },
     { name = "packaging", specifier = ">=23.2" },
@@ -924,6 +945,22 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d9/5a/e7c31adbe875f2abbb91bd84cf2dc52d792b5a01506781dbcf25c91daf11/six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254", size = 11053 },
 ]
 
+[[package]]
+name = "soupsieve"
+version = "2.4.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { 
+    url = "https://files.pythonhosted.org/packages/49/37/673d6490efc51ec46d198c75903d99de59baffdd47aea3d071b80a9e4e89/soupsieve-2.4.1.tar.gz", 
+    hash = "sha256:7b3b65bc288f3141b3664457669b1e6a16e87b222af2ef53cdf0067923e5959" 
+}
+wheels = [
+    { 
+        url = "https://files.pythonhosted.org/packages/49/37/673d6490efc51ec46d198c75903d99de59baffdd47aea3d071b80a9e4e89/soupsieve-2.4.1-py3-none-any.whl", 
+        hash = "sha256:1c1bfee6819544a3447586c889157365a27e10d88cde3ad3da0cf0ddf646feb8" 
+    },
+]
+
+
 [[package]]
 name = "tomli"
 version = "2.1.0"