diff --git a/requirements.txt b/requirements.txt
index 8620b73..983d7c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ et-xmlfile==2.0.0
     # via openpyxl
 flattentool==0.27.0
     # via libcove
-idna==3.10
+idna==3.15
     # via requests
 ijson==3.4.0
     # via
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 614ec4a..42e1765 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -85,7 +85,7 @@ flattentool==0.27.0
     # via libcove
 h11==0.16.0
     # via wsproto
-idna==3.10
+idna==3.15
     # via
     #   requests
     #   trio