diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7a6186..e0f206b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,4 +20,10 @@
 # v2.1.0
 - Upgraded dnspython to 2.0.x and fixed deprecated call to dns.resolver.query()
 - Upgraded validators to 0.17
-- Various pylint and type checking fixes
\ No newline at end of file
+- Various pylint and type checking fixes
+
+# v2.2.0
+- Upgraded SSLyze to 3.1
+- Removed pytest from requirements
+- Various pylint and type checking fixes
+- Removed TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 and TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 from "strong" TLS 1.2 ciphers
\ No newline at end of file
diff --git a/README.md b/README.md
index 6d3f286..d884e3c 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ SSLChecker is a serverless API written in Python and running on Azure Functions.
 
 ## Pre-requisites
 
-__Python__ - Python 3.7 (64-bit) and above.
+__Python__ - Python 3.7 and 3.8 (64-bit). Python 3.9 is not supported yet.
 
 __Development__ - To set up a local development environment, follow the guidance from Microsoft [here](https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-first-azure-function-azure-cli?pivots=programming-language-python&tabs=bash%2Cbrowser).
 
diff --git a/SSLChecker/requirements.txt b/SSLChecker/requirements.txt
index 5dddcfe..1a44b85 100644
--- a/SSLChecker/requirements.txt
+++ b/SSLChecker/requirements.txt
@@ -1,7 +1,6 @@
 azure-functions
 dnspython==2.00.0
-requests==2.22.0
-sslyze==3.0.8
-validators==0.17.1
+requests>=2.24.0
+sslyze==3.1.0
+validators==0.18.1
 typing-extensions==3.7.4.2
-pytest==5.4.3
diff --git a/SSLChecker/sharedcode/results.py b/SSLChecker/sharedcode/results.py
index 9e2d4ce..9d10269 100644
--- a/SSLChecker/sharedcode/results.py
+++ b/SSLChecker/sharedcode/results.py
@@ -1,11 +1,15 @@
-# Setters for the results dictionary
+""" Setters for the results dictionary """
 
+from typing import Dict, Any
 
-def set_error(error_type, message):
+
+def set_error(error_type, message) -> Dict[str, str]:
     return {"Error Type": error_type, "Message": message}
 
 
-def new_result_set():
+def new_result_set() -> Dict[str, Any]:
+    """ Result set """
+
     return {"Target": None, "IP": None, "MD5": None, "Scan": None, "View": None, "Results": []}
 
 
diff --git a/SSLChecker/sharedcode/scanner.py b/SSLChecker/sharedcode/scanner.py
index 485c3e4..2b359a6 100644
--- a/SSLChecker/sharedcode/scanner.py
+++ b/SSLChecker/sharedcode/scanner.py
@@ -1,4 +1,5 @@
 from hashlib import md5
+from typing import Dict, Any
 
 from sslyze import (
     ServerNetworkLocationViaDirectConnection,
@@ -33,17 +34,16 @@
 }
 
 # Currently, only The following TLS 1.2 ciphers are considered "strong"
-ALLOWED_TLS12_CIPHERS = {
+OK_TLS12_CIPHERS = {
     "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
     "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
     "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
     "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
     "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
     "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
-    "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
     "TLS_DHE_RSA_WITH_AES_128_GCM_SHA256",
     "TLS_DHE_RSA_WITH_AES_256_GCM_SHA384",
-    "TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
+    "TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256"
 }
 
 
@@ -53,7 +53,7 @@
 )
 
 
-def scan(target, ip, port, view, suite):
+def scan(target, ip, port, view, suite) -> Dict[str, Any]:
     """ Five inputs: web site name, ip, port
     split-dns view, and cipher suite """
 
@@ -99,7 +99,7 @@ def scan(target, ip, port, view, suite):
                 if suite == "policy" and scan_result.tls_version_used.name == "TLS_1_2":
                     if (
                         accepted_cipher_suite.cipher_suite.name
-                        not in ALLOWED_TLS12_CIPHERS
+                        not in OK_TLS12_CIPHERS
                     ):
                         results.set_ciphers(
                             scan_output,
diff --git a/SSLChecker/sharedcode/shared_dns.py b/SSLChecker/sharedcode/shared_dns.py
index 864dfef..7fd8fe2 100644
--- a/SSLChecker/sharedcode/shared_dns.py
+++ b/SSLChecker/sharedcode/shared_dns.py
@@ -1,3 +1,5 @@
+""" Shared module for dns operations """
+
 import pathlib
 from configparser import ConfigParser, ParsingError
 from typing import Tuple
@@ -8,8 +10,8 @@
 from .errors import InvalidConfig, InvalidFQDN, UnknownError, DNSError
 
 # Alias str type to better reflect the intented type and value
-fqdn = str
-ip = str
+Fqdn = str
+IpAddress = str
 
 
 def get_dns_options() -> Tuple[str, str]:
@@ -33,7 +35,7 @@ def get_dns_options() -> Tuple[str, str]:
     return external_dns, internal_dns
 
 
-def _init_resolver(dnsserver: ip, timeout: int, lifetime: int) -> resolver.Resolver:
+def _init_resolver(dnsserver: IpAddress, timeout: int, lifetime: int) -> resolver.Resolver:
     """
     initialize a resolver
     """
@@ -45,9 +47,9 @@ def _init_resolver(dnsserver: ip, timeout: int, lifetime: int) -> resolver.Resol
 
 
 def resolve_dns(
-        dnsserver: ip, dnsname: fqdn,
+        dnsserver: IpAddress, dnsname: Fqdn,
         timeout: int = 3, lifetime: int = 3
-        ) -> ip:
+        ) -> IpAddress:
     """ Resolve dns name """
     _iplist = []  # results
 
@@ -90,7 +92,7 @@ def resolve_dns(
         )
 
 
-def parse_name(name: str) -> fqdn:
+def parse_name(name: str) -> Fqdn:
     """ Parse a DNS name to ensure it does not contain http(s) """
     parsed_name = urlparse(name)