diff --git a/requirements.txt b/requirements.txt
index df6b9c41..17e9bc8d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ flattentool==0.27.0
     # via -r requirements.in
 hyperlink==21.0.0
     # via twisted
-idna==3.7
+idna==3.15
     # via
     #   hyperlink
     #   requests
diff --git a/requirements.txt.sha256 b/requirements.txt.sha256
index 47886324..325657d7 100644
--- a/requirements.txt.sha256
+++ b/requirements.txt.sha256
@@ -1 +1 @@
-8da6aacccc69891706cd78739c79ddfe35c0773d97cb7e8cdbb4b6966f48a057  requirements.txt
+8b9aac1787200f9290d33559a44f4a259fdf7ee98e0175d86da18ce878285c83  requirements.txt
diff --git a/requirements_dev.txt b/requirements_dev.txt
index e9f57b40..ba28a695 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -91,7 +91,7 @@ hyperlink==21.0.0
     # via
     #   -r requirements.txt
     #   twisted
-idna==3.7
+idna==3.15
     # via
     #   -r requirements.txt
     #   hyperlink