diff --git a/Pipfile b/Pipfile
index 65e4910b..667cb163 100644
--- a/Pipfile
+++ b/Pipfile
@@ -30,7 +30,7 @@ django-htmlmin = "~=0.11.0"
 envparse = "*"
 gunicorn = "~=20.0.4"
 icalendar = "~=4.0.7"
-idna = "~=2.10"
+idna = "~=3.7"
 Markdown = "~=3.3.3"
 msgpack = "~=1.0.2"
 pep517 = "~=0.9.1"
diff --git a/Pipfile.lock b/Pipfile.lock
index fb965db0..6d9979c5 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "78d322ad411e0d93faecadf3b944bec90718aac986848bdac6c76ef4a2f8da27"
+            "sha256": "f8055734413c580b0b5be7e1c5ce381ffa0d8e32d6a5b54a290f87642cb8600d"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -512,12 +512,12 @@
         },
         "idna": {
             "hashes": [
-                "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6",
-                "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"
+                "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc",
+                "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"
             ],
             "index": "pypi",
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.10"
+            "markers": "python_version >= '3.5'",
+            "version": "==3.7"
         },
         "importlib-metadata": {
             "hashes": [