diff --git a/requirements.prod.txt b/requirements.prod.txt
index 002e6eca..02d238f4 100644
--- a/requirements.prod.txt
+++ b/requirements.prod.txt
@@ -36,7 +36,7 @@ environs[django]==14.1.1
     # via -r requirements.prod.in
 gunicorn==23.0.0
     # via -r requirements.prod.in
-idna==3.10
+idna==3.15
     # via requests
 imagesize==1.4.1
     # via sphinx