diff --git a/requirements.txt b/requirements.txt
index 3e87baa..1f38c6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ mkdocstrings-python==0.7.1; python_version >= "3.8" and python_version < "4.0"
 mkdocstrings==0.19.0; python_version >= "3.8" and python_version < "4.0"
 mkgendocs==0.9.2; python_version >= "3.8" and python_version < "4.0"
 mknotebooks==0.7.1.post0.dev98; python_version >= "3.8" and python_version < "4.0"
-mypy-extensions==0.4.3; python_version >= "3.8" and python_version < "4.0"
+mypy-extensions==1.1.0; python_version >= "3.8" and python_version < "4.0"
 natsort==8.2.0; python_version >= "3.8" and python_version < "4.0" and python_full_version >= "3.6.2"
 nbclient==0.7.0; python_version >= "3.8" and python_version < "4.0" and python_full_version >= "3.7.0"
 nbconvert==7.2.4; python_version >= "3.8" and python_version < "4.0"