diff --git a/requirements.txt b/requirements.txt
index 809fb7b2cdbd76537534e107de028f3bffc4aba8..996d8f1b375a3db5bb1d3e6ab2e62d86d6024abd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ requests
 statsd
 flask
 lxml==4.9.4 # last wheel for py36
-ncclient
+ncclient==0.6.15 # https://github.com/ncclient/ncclient/issues/619
 influxdb
 
 pytest
diff --git a/setup.py b/setup.py
index e5db363386bc6521a7c70c882280b884a6f7a276..328fd688a1b9b97fef3f531c625af685268a6602 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ setup(
         'statsd',
         'flask',
         'lxml==4.9.4',  # last wheel for py36
-        'ncclient',
+        'ncclient==0.6.15',
         'influxdb'
     ],
     entry_points={