diff --git a/modules/openapi-generator/src/main/resources/python-fastapi/requirements.mustache b/modules/openapi-generator/src/main/resources/python-fastapi/requirements.mustache
index d8e19d7ac0f..be77b80cb2c 100644
--- a/modules/openapi-generator/src/main/resources/python-fastapi/requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python-fastapi/requirements.mustache
@@ -14,7 +14,7 @@ graphql-relay==2.0.1
 h11==0.12.0
 httptools==0.1.2
 httpx==0.24.1
-idna==2.10
+idna==3.7
 itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==2.0.1
diff --git a/samples/server/petstore/python-fastapi/requirements.txt b/samples/server/petstore/python-fastapi/requirements.txt
index d8e19d7ac0f..be77b80cb2c 100644
--- a/samples/server/petstore/python-fastapi/requirements.txt
+++ b/samples/server/petstore/python-fastapi/requirements.txt
@@ -14,7 +14,7 @@ graphql-relay==2.0.1
 h11==0.12.0
 httptools==0.1.2
 httpx==0.24.1
-idna==2.10
+idna==3.7
 itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==2.0.1