diff --git a/requirements.txt b/requirements.txt
index 93901c6..aae5565 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ Werkzeug>=1.0.1
 Jinja2>=2.11.3
 cryptography>=3.4.7
 freezegun>=1.1.0
-pyhanko-certvalidator==0.19.2
+pyhanko-certvalidator==0.19.5
 requests>=2.0.0
 requests-mock>=1.8.0
 pytest-aiohttp~=1.0.4
diff --git a/setup.py b/setup.py
index a140337..1999dcb 100644
--- a/setup.py
+++ b/setup.py
@@ -71,7 +71,7 @@ def get_version():
     },
     tests_require=[
         'pytest>=6.1.1', 'pytz>=2020.1',
-        'freezegun>=1.1.0', 'pyhanko-certvalidator==0.19.2',
+        'freezegun>=1.1.0', 'pyhanko-certvalidator==0.19.5',
         'requests>=2.0.0', 'pytest-aiohttp~=1.0.4'
     ],
     keywords="pki testing"