diff --git a/requirements.txt b/requirements.txt
index 7190c72e0..77574779a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,3 +14,4 @@ ntfsutils>=0.1.3
 checksumdir>=1.1.4
 setuptools>=34.0.0
 nanotime>=0.5.2
+pyasn1>=0.4.1
diff --git a/setup.py b/setup.py
index 865d3e373..153297cd5 100644
--- a/setup.py
+++ b/setup.py
@@ -19,6 +19,7 @@ install_requires = [
     "checksumdir>=1.1.4",
     "setuptools>=34.0.0",
     "nanotime>=0.5.2",
+    "pyasn1>=0.4.1",
 ]
 
 setup(