diff --git a/requirements-dev.txt b/requirements-dev.txt
index 92290dfa..8dd644c8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,7 +6,7 @@ charset-normalizer==3.4.4; python_full_version >= '3.7.0'
 click==8.3.1; python_version >= '3.7'
 colorama==0.4.6; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6'
 ghp-import==2.1.0
-idna==3.11; python_version >= '3.5'
+idna==3.15; python_version >= '3.5'
 jinja2==3.1.6; python_version >= '3.7'
 markdown==3.10; python_version >= '3.8'
 markupsafe==2.1.5; python_version >= '3.7'
diff --git a/requirements.txt b/requirements.txt
index 84ab486e..74a73fbc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ charset-normalizer==3.4.4; python_full_version >= '3.7.0'
 click==8.3.1; python_version >= '3.7'
 colorama==0.4.6; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6'
 ghp-import==2.1.0
-idna==3.11; python_version >= '3.5'
+idna==3.15; python_version >= '3.5'
 jinja2==3.1.6; python_version >= '3.7'
 markdown==3.10; python_version >= '3.8'
 markupsafe==2.1.5; python_version >= '3.7'