diff --git a/util/cloudflare/by_origin_purger/requirements.txt b/util/cloudflare/by_origin_purger/requirements.txt
index 9b31d71a232..0f839c470e6 100644
--- a/util/cloudflare/by_origin_purger/requirements.txt
+++ b/util/cloudflare/by_origin_purger/requirements.txt
@@ -1,6 +1,6 @@
 certifi==2018.10.15
 chardet==3.0.4
 Click==7.0
-idna==2.7
+idna==3.7
 requests==2.20.0
 urllib3==1.24.2