diff --git a/constraints.txt b/constraints.txt
index 3c508e91..e91cb010 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -1,4 +1,2 @@
-cftime<1.1.1;python_version=='3.5'
-netCDF4<1.5.4;python_version=='3.5'
 pyrsistent<0.17
 jsonschema<4.0
diff --git a/setup.py b/setup.py
index fa07d6ed..34feb8f0 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 INSTALL_REQUIRES = [
     'boto3>=1.9.156',
     'celery>=4.3.0',
-    'compliance-checker>=4.1.1',
+    'compliance-checker @ git+https://github.com/ioos/compliance-checker.git@5.0.1',
     'jsonschema>=2.6.0',
     'paramiko>=2.6.0',
     'python-magic>=0.4.15',
@@ -56,7 +56,7 @@
     author_email='developers@emii.org.au',
     description='AODN pipeline library',
     zip_safe=False,
-    python_requires='>=3.5',
+    python_requires='>=3.8',
     install_requires=INSTALL_REQUIRES,
     extras_require=EXTRAS_REQUIRE,
     tests_require=TESTS_REQUIRE,
@@ -69,8 +69,7 @@
         'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: Implementation :: CPython',
     ],
 )