diff --git a/requirements.txt b/requirements.txt
index f253417d..ffe12add 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,4 @@ pyparsing==2.4.7
 semantic-version==2.8.5
 semver==2.13.0
 isort==5.10.1
+packvers==21.5
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index a40267a1..2139fca9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -59,7 +59,7 @@ python_requires = >=3.8
 
 install_requires =
     attrs
-    packaging
+    packvers
     semantic-version
     semver
 
diff --git a/src/univers/version_range.py b/src/univers/version_range.py
index 69f84f24..53fafe2a 100644
--- a/src/univers/version_range.py
+++ b/src/univers/version_range.py
@@ -9,8 +9,8 @@
 
 import attr
 import semantic_version
-from packaging.specifiers import InvalidSpecifier
-from packaging.specifiers import SpecifierSet
+from packvers.specifiers import InvalidSpecifier
+from packvers.specifiers import SpecifierSet
 from semantic_version.base import AllOf
 from semantic_version.base import AnyOf
 
diff --git a/src/univers/versions.py b/src/univers/versions.py
index 14b3e007..269cdb05 100644
--- a/src/univers/versions.py
+++ b/src/univers/versions.py
@@ -6,7 +6,7 @@
 
 import attr
 import semantic_version
-from packaging import version as packaging_version
+from packvers import version as packaging_version
 
 from univers import arch
 from univers import debian
diff --git a/tests/test_pypi_version.py b/tests/test_pypi_version.py
index 7b6325d7..e49114af 100644
--- a/tests/test_pypi_version.py
+++ b/tests/test_pypi_version.py
@@ -6,7 +6,7 @@
 
 from unittest import TestCase
 
-from packaging import version as packaging_version
+from packvers import version as packaging_version
 
 from univers.versions import InvalidVersion
 from univers.versions import PypiVersion