diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 385fc6c..3403c1f 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -18,7 +18,7 @@ jobs:
             github-token: ${{ secrets.GITHUB_TOKEN }}
             commit-message-body-max-length: 72
             commit-message-body-min-length: 1
-            commit-message-subject-max-length: 50
+            commit-message-subject-max-length: 60
             commit-message-subject-min-length: 10
             re-commit-message-subject: ".+: .+"
             re-pull-request-title: ".*"
@@ -27,7 +27,7 @@ jobs:
     strategy:
       max-parallel: 5
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v4
diff --git a/flict/impl.py b/flict/impl.py
index a074629..690272b 100644
--- a/flict/impl.py
+++ b/flict/impl.py
@@ -51,10 +51,12 @@ def suggest_outbound_candidate(self):
 
         allowed_licenses = [x for x in licenses if self.arbiter.license_allowed(x)]
 
+        lic_expr_list = [license_expression] if isinstance(license_expression, str) else license_expression
+
         outbounds = []
         try:
             for outbound in allowed_licenses:
-                compats = self.arbiter.inbounds_outbound_check(outbound, [license_expression])
+                compats = self.arbiter.inbounds_outbound_check(outbound, lic_expr_list)
                 compat = compats['compatibility'] == 'Yes'
                 if compat:
                     outbounds.append(outbound)
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4727b9d..426646c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 bump2version ~= 1.0
 dataclasses ~= 0.6
-dlint ~= 0.15
+dlint ~= 0.16
 flake8 ~= 7.1
 flake8-2020 ~= 1.8
 flake8-bandit ~= 4.1
@@ -9,7 +9,7 @@ flake8-bugbear ~= 24.8
 flake8-builtins ~= 2.5
 flake8-coding ~= 1.3
 flake8-commas ~= 4.0
-flake8-comprehensions ~= 3.15
+flake8-comprehensions ~= 3.16
 flake8-debugger ~= 4.1
 flake8-docstrings ~= 1.7
 flake8-eradicate ~= 1.5
@@ -17,7 +17,6 @@ flake8-executable ~= 2.1
 flake8-fixme ~= 1.1
 flake8-functions == 0.0.8
 flake8-isort == 6.1.1
-flake8-logging-format == 1.0.0
 flake8-mutable ~= 1.2
 flake8-pep3101 ~= 2.1
 flake8-print ~= 5.0
@@ -27,13 +26,14 @@ flake8-string-format ~= 0.3
 flake8-variables-names == 0.0.6
 pytest ~= 8.3
 pytest-bandit ~= 0.6
-pytest-cov ~= 5.0
+pytest-cov ~= 6.0
 pytest-forked ~= 1.6
 pytest-icdiff ~= 0.9
 pytest-random-order ~= 1.1
 pytest-socket ~= 0.7
 pytest-sugar ~= 1.0
 pytest-tldr ~= 0.2
+pytest-xdist ~= 3.6
 twine ~= 5.1
 jsonschema ~= 4.23
 reuse ~= 4.0
diff --git a/requirements.txt b/requirements.txt
index 1f9eb5f..07be68f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-license-expression ~= 30.3
-osadl-matrix==2024.5.7.50556
+license-expression ~= 30.4
+osadl-matrix==2024.5.22.10535
 foss-flame ~= 0.20
diff --git a/setup.cfg b/setup.cfg
index 916b028..d61c57a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -43,4 +43,5 @@ addopts =
     --no-header
     --quiet
     --random-order --random-order-bucket=global
-    --showlocals
\ No newline at end of file
+    --showlocals
+    -n auto
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 73610ea..4fd0fdd 100644
--- a/setup.py
+++ b/setup.py
@@ -50,10 +50,11 @@
         "Natural Language :: English",
         "Operating System :: POSIX :: Linux",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: 3",
         "Topic :: Software Development :: Quality Assurance",
     ],
diff --git a/tests/test_problems.py b/tests/test_problems.py
index 3aeae81..7af63b2 100644
--- a/tests/test_problems.py
+++ b/tests/test_problems.py
@@ -25,9 +25,6 @@ def _get_problems(inbound, outbound):
 def test_problems_no():
     assert len(_get_problems('MIT', 'GPL-2.0-only')) == 0
 
-def test_problems_uknonwn():
-    assert len(_get_problems('HPND', 'GPL-2.0-only')) == 1
-
 def test_problems_undefined():
     assert len(_get_problems('NONESUCH', 'GPL-2.0-only')) == 1
 
diff --git a/tests/test_simplified.py b/tests/test_simplified.py
index 726ecd4..8ee5966 100644
--- a/tests/test_simplified.py
+++ b/tests/test_simplified.py
@@ -22,7 +22,7 @@ def test_simplify():
     _test_expression(['MIT and MIT or BSD3'], '{"original": "MIT and MIT or BSD3", "simplified": "BSD-3-Clause OR MIT"}')
     _test_expression(['GPL-2.0-only'], '{"original": "GPL-2.0-only", "simplified": "GPL-2.0-only"}')
     _test_expression(['GPL-2.0-or-later'], '{"original": "GPL-2.0-or-later", "simplified": "GPL-2.0-only OR GPL-3.0-only"}')
-    _test_expression(['GPL-2.0-or-later and MIT'], '{"original": "GPL-2.0-or-later and MIT", "simplified": "MIT AND (GPL-2.0-only OR GPL-3.0-only)"}')
+    _test_expression(['GPL-2.0-or-later and MIT'], '{"original": "GPL-2.0-or-later and MIT", "simplified": "(GPL-2.0-only AND MIT) OR (GPL-3.0-only AND MIT)"}')
     _test_expression(['MIT and GPL-2.0-only WITH Classpath-exception-2.0 and MIT'], '{"original": "MIT and GPL-2.0-only WITH Classpath-exception-2.0 and MIT", "simplified": "GPL-2.0-only WITH Classpath-exception-2.0 AND MIT"}')