diff --git a/dev-requirements.txt b/dev-requirements.txt
index db81213f..c93eff79 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -20,7 +20,7 @@ six==1.11.0
 iso8601==0.1.12
 pynacl==1.2.1
 cryptography==2.1.4
-securesystemslib==0.10.9
+securesystemslib==0.10.10
 
 # Testing requirements.  The rest of the testing dependencies available in
 # 'tox.ini'
diff --git a/setup.py b/setup.py
index 0dfe2fd8..e0d2cd88 100755
--- a/setup.py
+++ b/setup.py
@@ -108,7 +108,7 @@
     'Topic :: Security',
     'Topic :: Software Development'
   ],
-  install_requires = ['iso8601>=0.1.12', 'six>=1.11.0', 'securesystemslib>=0.10.9'],
+  install_requires = ['iso8601>=0.1.12', 'six>=1.11.0', 'securesystemslib>=0.10.10'],
   packages = find_packages(exclude=['tests']),
   scripts = [
     'tuf/scripts/repo.py',