diff --git a/docs/installation.rst b/docs/installation.rst
index 921f2c8d462ed..3db48e45ddf40 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -19,6 +19,9 @@ You can also install Airflow with support for extra features like ``s3`` or ``po
 .. note:: GPL dependency
 
     One of the dependencies of Apache Airflow by default pulls in a GPL library ('unidecode').
+    
+    If you are not concerned about the GPL dependency, export the following environment variable prior to installing airflow: ``export AIRFLOW_GPL_UNIDECODE=yes``.
+    
     In case this is a concern you can force a non GPL library by issuing
     ``export SLUGIFY_USES_TEXT_UNIDECODE=yes`` and then proceed with the normal installation.
     Please note that this needs to be specified at every upgrade. Also note that if `unidecode`