diff --git a/AUTHORS b/AUTHORS
index 55ae6a4..b73a1a3 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,3 +1,4 @@
+GitHub Action <action@github.com>
 Harold Solbrig <solbrig@jhu.edu>
 clin113jhu <clin113@jhu.edu>
 hsolbrig <solbrig@jhu.edu>
diff --git a/ChangeLog b/ChangeLog
index 6c33920..03e949d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,20 @@
 CHANGES
 =======
 
+* Update dependency on urllib3
+
+v0.1.6
+------
+
+* Automatically generated requirements and Pipfile.lock
+* Fix issue #14
+* Update setup.cfg
+
+v0.1.5
+------
+
+* Remove 3.7 unit tests
+* Automatically generated requirements and Pipfile.lock
 * Add github actions for unit test and update
 * Update test cases to reflect rdflib 5.0 differences
 * Fix issue 12
diff --git a/Pipfile b/Pipfile
index 56e778f..baffbcc 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,7 +7,7 @@ verify_ssl = true
 requests = "*"
 
 [packages]
-rdflib = ">=5.0.0"
+rdflib = "~=5.0, >=5.0.0"
 pyjsg = ">=0.11.6"
 rfc3987 = "*"
 bcp47 = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index c0d4602..b9772d3 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "a19f392c5e56e4222505014600bb481a25f2cf4bc8604f7e0721981c52432c72"
+            "sha256": "5aad704633b1f3aeea78dd70bd24b31643957398e6f75662f26a1904a87e30e2"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -60,11 +60,11 @@
         },
         "rdflib": {
             "hashes": [
-                "sha256:7ce4d757eb26f4dd43205ec340d8c097f29e5adfe45d6ea20238c731dc679879",
-                "sha256:bb24f0058070d5843503e15b37c597bc3858d328d11acd9476efad3aa62f555d"
+                "sha256:78149dd49d385efec3b3adfbd61c87afaf1281c30d3fcaf1b323b34f603fb155",
+                "sha256:88208ea971a87886d60ae2b1a4b2cdc263527af0454c422118d43fe64b357877"
             ],
             "index": "pypi",
-            "version": "==6.0.0"
+            "version": "==5.0.0"
         },
         "rfc3987": {
             "hashes": [
diff --git a/funowl/__init__.py b/funowl/__init__.py
index db3e323..acf3f1a 100644
--- a/funowl/__init__.py
+++ b/funowl/__init__.py
@@ -1,3 +1,6 @@
+import sys
+from warnings import warn
+
 from . prefix_declarations import Prefix
 from . declarations import Declaration
 from . literals import Datatype, StringLiteralNoLanguage, TypedLiteral, StringLiteralWithLanguage, Literal
@@ -29,7 +32,11 @@
 from . ontology_document import OntologyDocument, Ontology, Import
 from . axioms import Axiom
 
+
+if sys.version_info < (3, 8, 0):
+    warn(f"FunOwl needs python 3.8 or later.  Current version: {sys.version_info}")
+
 # TODO: Run coverage and test or toss anything that isn't executed
 # TODO: Consider removing the streaming IO feature -- it doesn't seem to do a lot for performance and makes things compicated
 # TODO: Put an official unit test in -- something like rdflib
-# TODO: See table 5 in OWL Spec -- builtin solution?
\ No newline at end of file
+# TODO: See table 5 in OWL Spec -- builtin solution?
diff --git a/requirements.txt b/requirements.txt
index 4f2434c..538f23b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,5 +12,5 @@
 
 bcp47
 pyjsg>=0.11.6
-rdflib>=5.0.0
+rdflib~=5.0, >=5.0.0
 rfc3987
diff --git a/tests/test_owl2_test_suite/syntax_converter.py b/tests/test_owl2_test_suite/syntax_converter.py
index a46225c..fcc555c 100644
--- a/tests/test_owl2_test_suite/syntax_converter.py
+++ b/tests/test_owl2_test_suite/syntax_converter.py
@@ -29,7 +29,7 @@ def convert(key: str, content: str, output_format: OWLFormat=OWLFormat.func) ->
     :return: Converted information if successful
     """
     try:
-        resp = requests.post('http://www.ldf.fi/service/owl-converter/',
+        resp = requests.post('https://www.ldf.fi/service/owl-converter/',
                              data=dict(onto=content, to=output_format.name))
     except ConnectionError as e:
         logging.getLogger().error(f"{key}: {str(e)}")