diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0f953a7..d01538b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@ codecov==2.0.15
 coverage==4.5.1
 dnspython==1.16.0
 pycodestyle==2.5.0
-pycryptodome==3.8.1
+pycryptodome==3.19.1
 pyOpenSSL==19.0.0
 pytest==4.4.0
 pytest-cov==2.6.1
diff --git a/setup.py b/setup.py
index e46d9e3..aadad20 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@ def get_long_description():
     keywords = ["peer-to-peer", "P2P", "p2p", "distribute", "HA", "High-Availability"],
     install_requires = [
         "dnspython==1.16.0",
-        "pycryptodome==3.8.1",
+        "pycryptodome==3.19.1",
         "pyOpenSSL==19.0.0"
     ],
     classifiers = [