diff --git a/environment.yml b/environment.yml
index a1042be48156c..9c2e29e19e1b4 100644
--- a/environment.yml
+++ b/environment.yml
@@ -25,6 +25,7 @@ dependencies:
   - pytest-mock
   - sphinx
   - numpydoc
+  - typing_extensions
 
   # optional
   - beautifulsoup4>=4.2.1
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 173441489b388..19d4aabb9d839 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -16,6 +16,7 @@ pytest>=4.0.2
 pytest-mock
 sphinx
 numpydoc
+typing_extensions
 beautifulsoup4>=4.2.1
 blosc
 botocore>=1.11