diff --git a/CHANGES.rst b/CHANGES.rst
index 07e69240..b0a3a0ae 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,6 +6,15 @@ Version 2.2.0
 Unreleased
 
 
+Version 2.1.1
+-------------
+
+Released on 2022-03-30
+
+-   Set the minimum required version of importlib_metadata to 3.6.0,
+    which is required on Python < 3.10. :issue:`4502`
+
+
 Version 2.1.0
 -------------
 
diff --git a/setup.py b/setup.py
index 196f1c10..a28763b5 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@ setup(
         "Jinja2 >= 3.0",
         "itsdangerous >= 2.0",
         "click >= 8.0",
-        "importlib-metadata; python_version < '3.10'",
+        "importlib-metadata >= 3.6.0; python_version < '3.10'",
     ],
     extras_require={
         "async": ["asgiref >= 3.2"],