diff --git a/swh/loader/package/pubdev/loader.py b/swh/loader/package/pubdev/loader.py
--- a/swh/loader/package/pubdev/loader.py
+++ b/swh/loader/package/pubdev/loader.py
@@ -2,7 +2,7 @@
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
-from distutils.version import StrictVersion
+from distutils.version import LooseVersion
 import json
 from pathlib import Path
 from typing import Any, Dict, Iterator, Optional, Sequence, Tuple
@@ -95,7 +95,7 @@
                 ["0.1.1", "0.10.2"]
         """
         versions = list(self.info()["versions"].keys())
-        versions.sort(key=StrictVersion)
+        versions.sort(key=LooseVersion)
         return versions
 
     def get_default_version(self) -> str:
diff --git a/swh/loader/package/pubdev/tests/data/fake_pubdev.sh b/swh/loader/package/pubdev/tests/data/fake_pubdev.sh
--- a/swh/loader/package/pubdev/tests/data/fake_pubdev.sh
+++ b/swh/loader/package/pubdev/tests/data/fake_pubdev.sh
@@ -26,6 +26,9 @@
 echo -e '''{"name":"pdf","latest":{"version":"3.8.2","pubspec":{"name":"pdf","description":"A pdf producer for Dart. It can create pdf files for both web or flutter.","homepage":"https://github.com/DavBfr/dart_pdf/tree/master/pdf","repository":"https://github.com/DavBfr/dart_pdf","issue_tracker":"https://github.com/DavBfr/dart_pdf/issues","version":"3.8.2","environment":{"sdk":">=2.12.0 <3.0.0"},"dependencies":{"archive":"^3.1.0","barcode":">=2.2.0 <3.0.0","crypto":"^3.0.0","image":">=3.0.1 <4.0.0","meta":">=1.3.0 <2.0.0","path_parsing":">=0.2.0 <2.0.0","vector_math":"^2.1.0","xml":">=5.1.0 <7.0.0"},"dev_dependencies":{"flutter_lints":"^1.0.4","test":">=1.16.0 <2.0.0"}},"archive_url":"https://pub.dartlang.org/packages/pdf/versions/3.8.2.tar.gz","published":"2022-07-25T11:38:25.983876Z"},"versions":[{"version":"1.0.0","pubspec":{"version":"1.0.0","name":"pdf","dependencies":{"ttf_parser":"^1.0.0","vector_math":"^2.0.7","meta":"^1.1.5"},"author":"David PHAM-VAN <dev.nfet.net@gmail.com>","description":"A pdf producer for Dart","homepage":"https://github.com/davbfr/dart_pdf","environment":{"sdk":">=1.8.0 <2.0.0"},"dev_dependencies":{"test":"any"}},"archive_url":"https://pub.dartlang.org/packages/pdf/versions/1.0.0.tar.gz","published":"2018-07-16T21:12:28.894137Z"},{"version":"3.8.2","pubspec":{"name":"pdf","description":"A pdf producer for Dart. It can create pdf files for both web or flutter.","homepage":"https://github.com/DavBfr/dart_pdf/tree/master/pdf","repository":"https://github.com/DavBfr/dart_pdf","issue_tracker":"https://github.com/DavBfr/dart_pdf/issues","version":"3.8.2","environment":{"sdk":">=2.12.0 <3.0.0"},"dependencies":{"archive":"^3.1.0","barcode":">=2.2.0 <3.0.0","crypto":"^3.0.0","image":">=3.0.1 <4.0.0","meta":">=1.3.0 <2.0.0","path_parsing":">=0.2.0 <2.0.0","vector_math":"^2.1.0","xml":">=5.1.0 <7.0.0"},"dev_dependencies":{"flutter_lints":"^1.0.4","test":">=1.16.0 <2.0.0"}},"archive_url":"https://pub.dartlang.org/packages/pdf/versions/3.8.2.tar.gz","published":"2022-07-25T11:38:25.983876Z"}]}
 ''' > ${BASE_API}/api_packages_pdf
 
+echo -e '''{"name":"abstract_io","latest":{"version":"0.1.2+6","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+6","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B6.tar.gz","archive_sha256":"9557fd384730d92a046cfccdff9625f2d646657219d5a0e447cb7eb0fdf90f18","published":"2020-08-03T21:31:05.764846Z"},"versions":[{"version":"0.1.2+4","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+4","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B4.tar.gz","archive_sha256":"df687ff2a92774db04a28167ccddbfe9c2fc1ea63c6ae05c3236552fe350bb68","published":"2020-08-03T20:14:38.116237Z"},{"version":"0.1.2+5","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+5","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B5.tar.gz","archive_sha256":"fc9199c2f9879d3c0d140c05a2f8c537561af256d98d209b4ee102e8107ec2b9","published":"2020-08-03T21:09:20.329418Z"},{"version":"0.1.2+6","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+6","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B6.tar.gz","archive_sha256":"9557fd384730d92a046cfccdff9625f2d646657219d5a0e447cb7eb0fdf90f18","published":"2020-08-03T21:31:05.764846Z"}]}
+''' > ${BASE_API}/api_packages_abstract_io
+
 # Dart package a pubspec.yaml file at thier root. Generate some of them.
 
 mkdir -p ${TMP}/packages_authentication_versions_0.0.1
diff --git a/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_Autolinker_versions_0.1.1.tar.gz b/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_Autolinker_versions_0.1.1.tar.gz
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_authentication_versions_0.0.1.tar.gz b/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_authentication_versions_0.0.1.tar.gz
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_bezier_versions_1.1.5.tar.gz b/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_bezier_versions_1.1.5.tar.gz
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_pdf_versions_1.0.0.tar.gz b/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_pdf_versions_1.0.0.tar.gz
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_pdf_versions_3.8.2.tar.gz b/swh/loader/package/pubdev/tests/data/https_pub.dartlang.org/packages_pdf_versions_3.8.2.tar.gz
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/swh/loader/package/pubdev/tests/data/https_pub.dev/api_packages_abstract_io b/swh/loader/package/pubdev/tests/data/https_pub.dev/api_packages_abstract_io
new file mode 100644
--- /dev/null
+++ b/swh/loader/package/pubdev/tests/data/https_pub.dev/api_packages_abstract_io
@@ -0,0 +1,2 @@
+{"name":"abstract_io","latest":{"version":"0.1.2+6","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+6","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B6.tar.gz","archive_sha256":"9557fd384730d92a046cfccdff9625f2d646657219d5a0e447cb7eb0fdf90f18","published":"2020-08-03T21:31:05.764846Z"},"versions":[{"version":"0.1.2+4","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+4","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B4.tar.gz","archive_sha256":"df687ff2a92774db04a28167ccddbfe9c2fc1ea63c6ae05c3236552fe350bb68","published":"2020-08-03T20:14:38.116237Z"},{"version":"0.1.2+5","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+5","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B5.tar.gz","archive_sha256":"fc9199c2f9879d3c0d140c05a2f8c537561af256d98d209b4ee102e8107ec2b9","published":"2020-08-03T21:09:20.329418Z"},{"version":"0.1.2+6","pubspec":{"name":"abstract_io","description":"Abstract IO is designed to simplify and generalize saving data both localy and externaly","version":"0.1.2+6","author":"Anders Groeschel","repository":"https://github.com/AndersGroeschel/abstract_io","homepage":"https://github.com/AndersGroeschel/abstract_io","environment":{"sdk":">=2.7.0 <3.0.0"},"dependencies":{"flutter":{"sdk":"flutter"}}},"archive_url":"https://pub.dartlang.org/packages/abstract_io/versions/0.1.2%2B6.tar.gz","archive_sha256":"9557fd384730d92a046cfccdff9625f2d646657219d5a0e447cb7eb0fdf90f18","published":"2020-08-03T21:31:05.764846Z"}]}
+
diff --git a/swh/loader/package/pubdev/tests/test_pubdev.py b/swh/loader/package/pubdev/tests/test_pubdev.py
--- a/swh/loader/package/pubdev/tests/test_pubdev.py
+++ b/swh/loader/package/pubdev/tests/test_pubdev.py
@@ -29,6 +29,9 @@
     {
         "url": "https://pub.dev/api/packages/authentication",  # empty author
     },
+    {
+        "url": "https://pub.dev/api/packages/abstract_io",  # loose versions names
+    },
 ]
 
 
@@ -43,6 +46,15 @@
     ]
 
 
+def test_get_loose_versions(requests_mock_datadir, swh_storage):
+    """Sometimes version name does not follow semver"""
+    loader = PubDevLoader(
+        swh_storage,
+        url=EXPECTED_PACKAGES[4]["url"],
+    )
+    assert loader.get_versions() == ["0.1.2+4", "0.1.2+5", "0.1.2+6"]
+
+
 def test_get_default_version(requests_mock_datadir, swh_storage):
     loader = PubDevLoader(
         swh_storage,