diff --git a/requirements.txt b/requirements.txt
index 0844265..0a27f33 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ py2casefold==0.2.1
 pyasn1-modules==0.1.5
 pyasn1==0.3.7
 pyopenssl==17.3.0
-pyrsistent==0.13.0
+pyrsistent==0.14.0
 python-mimeparse==1.6.0
 service-identity==17.0.0
 six==1.11.0