diff --git a/test/runner/requirements/constraints.txt b/test/runner/requirements/constraints.txt
index df561d4253f2a1..6e8a0105fe52d1 100644
--- a/test/runner/requirements/constraints.txt
+++ b/test/runner/requirements/constraints.txt
@@ -8,7 +8,7 @@ wheel < 0.30.0 ; python_version < '2.7' # wheel 0.30.0 and later require python
 yamllint != 1.8.0, < 1.14.0 ; python_version < '2.7' # yamllint 1.8.0 and 1.14.0+ require python 2.7+
 pycrypto >= 2.6 # Need features found in 2.6 and greater
 ncclient >= 0.5.2 # Need features added in 0.5.2 and greater
-idna < 2.6 # requests requires idna < 2.6, but cryptography will cause the latest version to be installed instead
+idna < 3.11 # requests requires idna < 3.11, but cryptography will cause the latest version to be installed instead
 paramiko < 2.4.0 ; python_version < '2.7' # paramiko 2.4.0 drops support for python 2.6
 pytest < 3.3.0 ; python_version < '2.7' # pytest 3.3.0 drops support for python 2.6
 pytest < 5.0.0 ; python_version == '2.7' # pytest 5.0.0 and later will no longer support python 2.7