diff --git a/conda/meta.yaml b/conda/meta.yaml
index 1c1e2e11..808fa379 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -19,6 +19,7 @@ requirements:
     - pyparsing 2.*
     - ezdxf
     - ipython 6.5.*
+    - typing_extensions
     
 test:
   requires: