diff --git a/docker/dev.requirements.txt b/docker/dev.requirements.txt
index 76faae615..fc43f2e1f 100644
--- a/docker/dev.requirements.txt
+++ b/docker/dev.requirements.txt
@@ -61,7 +61,7 @@ decorator==5.1.1
 defusedxml==0.7.1
 dill==0.3.1.1
 dm-tree==0.1.8
-dnspython==2.4.2
+dnspython==2.6.1
 docopt==0.6.2
 docutils==0.18.1
 etils==1.4.1