diff --git a/CHANGELOG.md b/CHANGELOG.md
index e52b0cd..9f5cc88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+6.5.5
+-----
+
+- Set set minimum `publicsuffix2` version
+
 6.5.4
 -----
 
diff --git a/parsedmarc/utils.py b/parsedmarc/utils.py
index b4b3141..b9bc151 100644
--- a/parsedmarc/utils.py
+++ b/parsedmarc/utils.py
@@ -117,7 +117,7 @@ def get_base_domain(domain, use_fresh_psl=False):
 
         return psl.get_public_suffix(domain)
     else:
-        return publicsuffix2.get_public_suffix(domain)
+        return publicsuffix2.get_sld(domain)
 
 
 def query_dns(domain, record_type, cache=None, nameservers=None, timeout=2.0):
diff --git a/requirements.txt b/requirements.txt
index d18afcb..631057d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ dnspython>=1.16.0
 expiringdict>=1.1.4
 urllib3<1.25,>=1.21.1
 requests>=2.2.16.0
-publicsuffix2
+publicsuffix2>=2.20190812
 xmltodict>=0.12.0
 geoip2>=2.9.0
 imapclient>=2.1.0
diff --git a/setup.py b/setup.py
index ad2b2c2..bec6b75 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@ from setuptools import setup
 from codecs import open
 from os import path
 
-__version__ = "6.5.4"
+__version__ = "6.5.5"
 
 description = "A Python package and CLI for parsing aggregate and " \
               "forensic DMARC reports"
@@ -93,9 +93,10 @@ setup(
     # requirements files see:
     # https://packaging.python.org/en/latest/requirements.html
     install_requires=['dnspython>=1.16.0', 'expiringdict>=1.1.4',
-                      'publicsuffix2', 'xmltodict>=0.12.0', 'geoip2>=2.9.0',
-                      'urllib3<1.25,>=1.21.1', 'requests>=2.2.16.0',
-                      'imapclient>=2.1.0', 'mail-parser>=3.9.2',
+                      'publicsuffix2>=2.20190812', 'xmltodict>=0.12.0',
+                      'geoip2>=2.9.0', 'urllib3<1.25,>=1.21.1',
+                      'requests>=2.2.16.0', 'imapclient>=2.1.0',
+                      'mail-parser>=3.9.2',
                       'dateparser>=0.7.1',
                       'mailsuite>=1.2.1',
                       'elasticsearch>=6.3.1,<7.0.0',