diff --git a/requirements-indirect.txt b/requirements-indirect.txt
index 7e06205ba..5e667e5b3 100644
--- a/requirements-indirect.txt
+++ b/requirements-indirect.txt
@@ -17,7 +17,7 @@ py==1.9.0
 pycodestyle==2.6.0
 pycparser==2.20
 pyflakes==2.2.0
-PyNaCl==1.3.0
+PyNaCl==1.4.0
 pyparsing==2.4.7
 pyrsistent==0.16.0
 smmap==3.0.4